Check for NULL ptr in midiStreamOut.

c22256a0 · Eric Pouech · Alexandre Julliard · f87d30ed · c22256a0
Commit c22256a0 authored May 29, 2002 by Eric Pouech Committed by Alexandre Julliard May 29, 2002
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mmsystem.c dlls/winmm/mmsystem.c +4 -2

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--- a/dlls/winmm/mmsystem.c
+++ b/dlls/winmm/mmsystem.c
@@ -3469,10 +3469,12 @@ MMRESULT WINAPI midiStreamOut(HMIDISTRM hMidiStrm, LPMIDIHDR lpMidiHdr,
    if (!MMSYSTEM_GetMidiStream(hMidiStrm, &lpMidiStrm, NULL)) {
 	ret = MMSYSERR_INVALHANDLE;
+    } else if (!lpMidiHdr) {
+        ret = MMSYSERR_INVALPARAM;
    } else {
 	if (!PostThreadMessageA(lpMidiStrm->dwThreadID, 
-					WINE_MSM_HEADER, cbMidiHdr, 
+                                WINE_MSM_HEADER, cbMidiHdr, 
-					(DWORD)lpMidiHdr)) {
+                                (DWORD)lpMidiHdr)) {
 	    WARN("bad PostThreadMessageA\n");
 	    ret = MMSYSERR_ERROR;
 	}