Handle proc == NULL in THUNK_SetDCHook correctly.

733145f7 · Ulrich Weigand · Alexandre Julliard · adfeec96 · 733145f7
Commit 733145f7 authored May 22, 1999 by Ulrich Weigand Committed by Alexandre Julliard May 22, 1999
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thunk.c if1632/thunk.c +3 -1

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--- a/if1632/thunk.c
+++ b/if1632/thunk.c
@@ -535,7 +535,9 @@ BOOL16 WINAPI THUNK_SetDCHook( HDC16 hdc, FARPROC16 proc, DWORD dwHookData )
            defDCHookProc = (FARPROC16)-1;
    }

-    if (proc != defDCHookProc)
+    if (!proc)
+        thunk = NULL;
+    else if (proc != defDCHookProc)
    {
        thunk = THUNK_Alloc( proc, (RELAY)CallTo16_word_wwll );
        if (!thunk) return FALSE;