Check for NULL handle before calling HeapValidate.

4e2f4a9c · Alexandre Julliard · d48372c1 · 4e2f4a9c
Commit 4e2f4a9c authored Nov 30, 2000 by Alexandre Julliard
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winproc.c windows/winproc.c +1 -1

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--- a/windows/winproc.c
+++ b/windows/winproc.c
@@ -260,7 +260,7 @@ static WINDOWPROC *WINPROC_GetPtr( WNDPROC16 handle )

    /* Check for a linear pointer */

-    if (HeapValidate( WinProcHeap, 0, (LPVOID)handle ))
+    if (handle && HeapValidate( WinProcHeap, 0, (LPVOID)handle ))
    {
        ptr = (BYTE *)handle;
        /* First check if it is the jmp address */