wintrust: Only register actions when HKLM\Software\Microsoft\Cryptography\Providers\Trust can be opened.

dlls/wintrust/register.c

@@ -708,9 +708,6 @@ HRESULT WINAPI DllRegisterServer(void)
 
     TRACE("\n");
 
-    /* Create the necessary action registry structures */
-    WINTRUST_InitRegStructs();
-
     /* FIXME:
      * 
      * A short list of stuff that should be done here:
@@ -731,9 +728,19 @@ HRESULT WINAPI DllRegisterServer(void)
 
     /* Check if we can open/create HKLM\Software\Microsoft\Cryptography\Providers\Trust */
     if (RegCreateKeyExW(HKEY_LOCAL_MACHINE, Trust, 0, NULL, 0, KEY_WRITE, NULL, &Key, NULL) != ERROR_SUCCESS)
+    {
+        /* If the opening/creation of the key fails, there is no need to do the action registrations as they
+         * will fail as well.
+         */
         Res = S_FALSE;
+    }
+    else
+    {
         RegCloseKey(Key);
 
+        /* Create the necessary action registry structures */
+        WINTRUST_InitRegStructs();
+
         /* Register several Trust Provider actions */
         WINTRUST_RegisterGenVerifyV2();
         WINTRUST_RegisterPublishedSoftware();
@@ -747,6 +754,7 @@ HRESULT WINAPI DllRegisterServer(void)
 
         /* Free the registry structures */
         WINTRUST_FreeRegStructs();
+    }
 
     return Res;
 }