wininet: check whether hEnumHandle is NULL before using it (prevents NWN2 updater from crashing)

[Rok Mandeljc]

---
 dlls/wininet/urlcache.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/wininet/urlcache.c b/dlls/wininet/urlcache.c
index 429867a..52a1684 100644
--- a/dlls/wininet/urlcache.c
+++ b/dlls/wininet/urlcache.c
@@ -3044,7 +3044,7 @@ BOOL WINAPI FindNextUrlCacheEntryA(
 
     TRACE("(%p, %p, %p)\n", hEnumHandle, lpNextCacheEntryInfo, lpdwNextCacheEntryInfoBufferSize);
 
-    if (pEntryHandle->dwMagic != URLCACHE_FIND_ENTRY_HANDLE_MAGIC)
+    if (!pEntryHandle || pEntryHandle->dwMagic != URLCACHE_FIND_ENTRY_HANDLE_MAGIC)
     {
         SetLastError(ERROR_INVALID_HANDLE);
         return FALSE;
@@ -3126,7 +3126,7 @@ BOOL WINAPI FindCloseUrlCache(HANDLE hEnumHandle)
 
     TRACE("(%p)\n", hEnumHandle);
 
-    if (pEntryHandle->dwMagic != URLCACHE_FIND_ENTRY_HANDLE_MAGIC)
+    if (!pEntryHandle || pEntryHandle->dwMagic != URLCACHE_FIND_ENTRY_HANDLE_MAGIC)
     {
         SetLastError(ERROR_INVALID_HANDLE);
         return FALSE;
-- 
1.5.4.1