diff --git a/dlls/devenum/devenum_main.c b/dlls/devenum/devenum_main.c
index b61e0f8a9ce..4a45971233d 100644
--- a/dlls/devenum/devenum_main.c
+++ b/dlls/devenum/devenum_main.c
@@ -278,9 +278,7 @@ HRESULT WINAPI DllRegisterServer(void)
     if (hkeyClsid)
         RegCloseKey(hkeyClsid);
 
-    if (pszClsidDevMon)
-        CoTaskMemFree(pszClsidDevMon);
-
+    CoTaskMemFree(pszClsidDevMon);
     CoUninitialize();
 
     return res;
diff --git a/dlls/devenum/parsedisplayname.c b/dlls/devenum/parsedisplayname.c
index 310ea950a60..091ad08bc2e 100644
--- a/dlls/devenum/parsedisplayname.c
+++ b/dlls/devenum/parsedisplayname.c
@@ -147,8 +147,7 @@ static HRESULT WINAPI DEVENUM_IParseDisplayName_ParseDisplayName(
     if (pEm)
         IEnumMoniker_Release(pEm);
 
-    if (pszClass)
-        CoTaskMemFree(pszClass);
+    CoTaskMemFree(pszClass);
 
     TRACE("-- returning: %lx\n", res);
     return res;
diff --git a/dlls/msdmo/dmort.c b/dlls/msdmo/dmort.c
index bf788a5c1cb..d72d376f11a 100644
--- a/dlls/msdmo/dmort.c
+++ b/dlls/msdmo/dmort.c
@@ -121,11 +121,8 @@ HRESULT WINAPI MoFreeMediaType(DMO_MEDIA_TYPE* pmedia)
         pmedia->pUnk = NULL;
     }
 
-    if (pmedia->pbFormat)
-    {
-        CoTaskMemFree(pmedia->pbFormat);
-        pmedia->pbFormat = NULL;
-    }
+    CoTaskMemFree(pmedia->pbFormat);
+    pmedia->pbFormat = NULL;
 
     return S_OK;
 }
diff --git a/dlls/oleaut32/usrmarshal.c b/dlls/oleaut32/usrmarshal.c
index 90782c76752..04b64b92ce3 100644
--- a/dlls/oleaut32/usrmarshal.c
+++ b/dlls/oleaut32/usrmarshal.c
@@ -1726,8 +1726,7 @@ void CALLBACK ITypeInfo_ReleaseVarDesc_Proxy(
 {
     TRACE("(%p, %p)\n", This, pVarDesc);
 
-    if(pVarDesc->lpstrSchema)
-        CoTaskMemFree(pVarDesc->lpstrSchema);
+    CoTaskMemFree(pVarDesc->lpstrSchema);
 
     if(pVarDesc->varkind == VAR_CONST)
         CoTaskMemFree(pVarDesc->u.lpvarValue);
diff --git a/dlls/qcap/enummedia.c b/dlls/qcap/enummedia.c
index a57d8a9bfd3..8f3361111a7 100644
--- a/dlls/qcap/enummedia.c
+++ b/dlls/qcap/enummedia.c
@@ -47,11 +47,9 @@ HRESULT CopyMediaType(AM_MEDIA_TYPE * pDest, const AM_MEDIA_TYPE *pSrc)
 
 void FreeMediaType(AM_MEDIA_TYPE * pMediaType)
 {
-    if (pMediaType->pbFormat)
-    {
-        CoTaskMemFree(pMediaType->pbFormat);
-        pMediaType->pbFormat = NULL;
-    }
+    CoTaskMemFree(pMediaType->pbFormat);
+    pMediaType->pbFormat = NULL;
+
     if (pMediaType->pUnk)
     {
         IUnknown_Release(pMediaType->pUnk);
diff --git a/dlls/quartz/filesource.c b/dlls/quartz/filesource.c
index a44ca364c56..23fb1fb44dc 100644
--- a/dlls/quartz/filesource.c
+++ b/dlls/quartz/filesource.c
@@ -620,11 +620,10 @@ static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFi
             IPin_Release(This->pOutputPin);
             This->pOutputPin = NULL;
         }
-        if (This->pszFileName)
-        {
-            CoTaskMemFree(This->pszFileName);
-            This->pszFileName = NULL;
-        }
+
+        CoTaskMemFree(This->pszFileName);
+        This->pszFileName = NULL;
+
         CloseHandle(hFile);
     }
 
@@ -1079,12 +1078,8 @@ static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dw
         *pdwUser = pDataRq->dwUserData;
     }
 
-    /* clean up */
-    if (pDataRq)
-    {
-        /* no need to close event handle since we will close it when the pin is destroyed */
-        CoTaskMemFree(pDataRq);
-    }
+    /* no need to close event handle since we will close it when the pin is destroyed */
+    CoTaskMemFree(pDataRq);
     
     TRACE("-- %lx\n", hr);
     return hr;
diff --git a/dlls/quartz/filtermapper.c b/dlls/quartz/filtermapper.c
index 5a5eaf34fc1..7a92a7e7c09 100644
--- a/dlls/quartz/filtermapper.c
+++ b/dlls/quartz/filtermapper.c
@@ -152,8 +152,7 @@ static int find_data(struct Vector * v, const BYTE * pData, int size)
 
 static void delete_vector(struct Vector * v)
 {
-    if (v->pData)
-        CoTaskMemFree(v->pData);
+    CoTaskMemFree(v->pData);
     v->current = 0;
     v->capacity = 0;
 }
@@ -288,11 +287,8 @@ static HRESULT WINAPI FilterMapper2_CreateCategory(
     }
 
     CloseHandle(hKey);
-
-    if (wClsidCategory)
-        CoTaskMemFree(wClsidCategory);
-    if (wClsidAMCat)
-        CoTaskMemFree(wClsidAMCat);
+    CoTaskMemFree(wClsidCategory);
+    CoTaskMemFree(wClsidAMCat);
 
     return hr;
 }
@@ -336,10 +332,8 @@ static HRESULT WINAPI FilterMapper2_UnregisterFilter(
         hr = HRESULT_FROM_WIN32(lRet);
     }
 
-    if (wClsidCategory)
-        CoTaskMemFree(wClsidCategory);
-    if (wFilter)
-        CoTaskMemFree(wFilter);
+    CoTaskMemFree(wClsidCategory);
+    CoTaskMemFree(wFilter);
 
     return hr;
 }
@@ -368,8 +362,7 @@ static HRESULT FM2_WriteClsid(IPropertyBag * pPropBag, REFCLSID clsid)
         V_UNION(&var, bstrVal) = wszClsid;
         hr = IPropertyBag_Write(pPropBag, wszClsidName, &var);
     }
-    if (wszClsid)
-        CoTaskMemFree(wszClsid);
+    CoTaskMemFree(wszClsid);
     return hr;
 }
 
@@ -748,11 +741,9 @@ static HRESULT WINAPI FilterMapper2_RegisterFilter(
             strcpyW(pCurrent+1, szInstance);
         else
         {
-            if (szClsidTemp)
-            {
-                CoTaskMemFree(szClsidTemp);
-                szClsidTemp = NULL;
-            }
+            CoTaskMemFree(szClsidTemp);
+            szClsidTemp = NULL;
+
             hr = StringFromCLSID(clsidFilter, &szClsidTemp);
             if (SUCCEEDED(hr))
                 strcpyW(pCurrent+1, szClsidTemp);
@@ -787,16 +778,14 @@ static HRESULT WINAPI FilterMapper2_RegisterFilter(
 
     if (pPropBag)
         IPropertyBag_Release(pPropBag);
-    if (szClsidTemp)
-        CoTaskMemFree(szClsidTemp);
+    CoTaskMemFree(szClsidTemp);
 
     if (SUCCEEDED(hr) && ppMoniker)
         *ppMoniker = pMoniker;
     else if (pMoniker)
         IMoniker_Release(pMoniker);
 
-    if (pregfp2)
-        CoTaskMemFree(pregfp2);
+    CoTaskMemFree(pregfp2);
 
     TRACE("-- returning %lx\n", hr);
 
@@ -1360,8 +1349,7 @@ static HRESULT WINAPI FilterMapper_RegisterPin(
         hr = HRESULT_FROM_WIN32(lRet);
     }
 
-    if (wszClsid)
-        CoTaskMemFree(wszClsid);
+    CoTaskMemFree(wszClsid);
     if (hKey)
         CloseHandle(hKey);
     if (hPinsKey)
@@ -1437,12 +1425,9 @@ static HRESULT WINAPI FilterMapper_RegisterPinType(
         CloseHandle(hKey);
     }
 
-    if (wszClsid)
-        CoTaskMemFree(wszClsid);
-    if (wszClsidMajorType)
-        CoTaskMemFree(wszClsidMajorType);
-    if (wszClsidSubType)
-        CoTaskMemFree(wszClsidSubType);
+    CoTaskMemFree(wszClsid);
+    CoTaskMemFree(wszClsidMajorType);
+    CoTaskMemFree(wszClsidSubType);
 
     return hr;
 }
@@ -1488,8 +1473,7 @@ static HRESULT WINAPI FilterMapper_UnregisterFilter(IFilterMapper * iface, CLSID
         CloseHandle(hKey);
     }
 
-    if (wszClsid)
-        CoTaskMemFree(wszClsid);
+    CoTaskMemFree(wszClsid);
 
     return hr;
 }
@@ -1546,8 +1530,7 @@ static HRESULT WINAPI FilterMapper_UnregisterPin(IFilterMapper * iface, CLSID Fi
         CoTaskMemFree(wszPinNameKey);
     }
 
-    if (wszClsid)
-        CoTaskMemFree(wszClsid);
+    CoTaskMemFree(wszClsid);
     if (hKey)
         CloseHandle(hKey);