From 8c6ac00820e93e6bc4570a9526d3a951061ca043 Mon Sep 17 00:00:00 2001
From: Rob Shearman <rob@codeweavers.com>
Date: Mon, 10 Mar 2008 16:39:40 +0000
Subject: [PATCH] wininet: Don't call DeleteSecurityContext and
 FreeCredentialsHandle on invalid handles.

---
 dlls/wininet/http.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/dlls/wininet/http.c b/dlls/wininet/http.c
index 085cab2d0b8..aba4bbad280 100644
--- a/dlls/wininet/http.c
+++ b/dlls/wininet/http.c
@@ -1341,8 +1341,10 @@ static void HTTPREQ_CloseConnection(WININETHANDLEHEADER *hdr)
 
     if (lpwhr->pAuthInfo)
     {
-        DeleteSecurityContext(&lpwhr->pAuthInfo->ctx);
-        FreeCredentialsHandle(&lpwhr->pAuthInfo->cred);
+        if (SecIsValidHandle(&lpwhr->pAuthInfo->ctx))
+            DeleteSecurityContext(&lpwhr->pAuthInfo->ctx);
+        if (SecIsValidHandle(&lpwhr->pAuthInfo->cred))
+            FreeCredentialsHandle(&lpwhr->pAuthInfo->cred);
 
         HeapFree(GetProcessHeap(), 0, lpwhr->pAuthInfo->auth_data);
         HeapFree(GetProcessHeap(), 0, lpwhr->pAuthInfo->scheme);
@@ -1351,8 +1353,10 @@ static void HTTPREQ_CloseConnection(WININETHANDLEHEADER *hdr)
     }
     if (lpwhr->pProxyAuthInfo)
     {
-        DeleteSecurityContext(&lpwhr->pProxyAuthInfo->ctx);
-        FreeCredentialsHandle(&lpwhr->pProxyAuthInfo->cred);
+        if (SecIsValidHandle(&lpwhr->pProxyAuthInfo->ctx))
+            DeleteSecurityContext(&lpwhr->pProxyAuthInfo->ctx);
+        if (SecIsValidHandle(&lpwhr->pProxyAuthInfo->cred))
+            FreeCredentialsHandle(&lpwhr->pProxyAuthInfo->cred);
 
         HeapFree(GetProcessHeap(), 0, lpwhr->pProxyAuthInfo->auth_data);
         HeapFree(GetProcessHeap(), 0, lpwhr->pProxyAuthInfo->scheme);