wininet: Remove custom content-length/type headers from redirects.

dlls/wininet/http.c

@@ -2861,10 +2861,13 @@ static BOOL HTTP_GetRequestURL(WININETHTTPREQW *req, LPWSTR buf)
  */
 static BOOL HTTP_HandleRedirect(LPWININETHTTPREQW lpwhr, LPCWSTR lpszUrl)
 {
+    static const WCHAR szContentType[] = {'C','o','n','t','e','n','t','-','T','y','p','e',0};
+    static const WCHAR szContentLength[] = {'C','o','n','t','e','n','t','-','L','e','n','g','t','h',0};
     LPWININETHTTPSESSIONW lpwhs = lpwhr->lpHttpSession;
     LPWININETAPPINFOW hIC = lpwhs->lpAppInfo;
     BOOL using_proxy = hIC->lpszProxy && hIC->lpszProxy[0];
     WCHAR path[INTERNET_MAX_URL_LENGTH];
+    int index;
 
     if(lpszUrl[0]=='/')
     {
@@ -3051,6 +3054,14 @@ static BOOL HTTP_HandleRedirect(LPWININETHTTPREQW lpwhr, LPCWSTR lpszUrl)
         }
     }
 
+    /* Remove custom content-type/length headers on redirects.  */
+    index = HTTP_GetCustomHeaderIndex(lpwhr, szContentType, 0, TRUE);
+    if (0 <= index)
+        HTTP_DeleteCustomHeader(lpwhr, index);
+    index = HTTP_GetCustomHeaderIndex(lpwhr, szContentLength, 0, TRUE);
+    if (0 <= index)
+        HTTP_DeleteCustomHeader(lpwhr, index);
+
     return TRUE;
 }