winealsa: Don't dereference a potentially NULL value in the WARN statement (Coverity 93).

2cc258f6 · Aric Stewart · Alexandre Julliard · a03cc957 · 2cc258f6
Commit 2cc258f6 authored Oct 04, 2008 by Aric Stewart Committed by Alexandre Julliard Oct 06, 2008
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midi.c dlls/winealsa.drv/midi.c +2 -2

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--- a/dlls/winealsa.drv/midi.c
+++ b/dlls/winealsa.drv/midi.c
@@ -1050,8 +1050,8 @@ static DWORD modPrepare(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
    if (dwSize < sizeof(MIDIHDR) || lpMidiHdr == 0 ||
 	lpMidiHdr->lpData == 0 || (lpMidiHdr->dwFlags & MHDR_INQUEUE) != 0 ||
 	lpMidiHdr->dwBufferLength >= 0x10000ul) {
-	WARN("%p %p %08x %d/%d\n", lpMidiHdr, lpMidiHdr->lpData,
-	           lpMidiHdr->dwFlags, sizeof(MIDIHDR), dwSize);
+	WARN("%p %p %08x %d/%d\n", lpMidiHdr, lpMidiHdr ? lpMidiHdr->lpData : NULL,
+             lpMidiHdr ? lpMidiHdr->dwFlags : 0, sizeof(MIDIHDR), dwSize);
 	return MMSYSERR_INVALPARAM;
    }