From f12855143939e28d9912991674a58129dfb8f884 Mon Sep 17 00:00:00 2001
From: Michael Stefaniuc <mstefani@redhat.de>
Date: Wed, 13 Feb 2013 23:44:39 +0100
Subject: [PATCH] wineoss.drv: Use offsetof to calculate the size of a struct
 with variable length array.

---
 dlls/wineoss.drv/midi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/dlls/wineoss.drv/midi.c b/dlls/wineoss.drv/midi.c
index 0bf5d879ed1..11b7c917d9c 100644
--- a/dlls/wineoss.drv/midi.c
+++ b/dlls/wineoss.drv/midi.c
@@ -1115,8 +1115,7 @@ static DWORD modOpen(WORD wDevID, LPMIDIOPENDESC lpDesc, DWORD dwFlags)
 	    void*	extra;
 
             extra = HeapAlloc(GetProcessHeap(), 0,
-                              sizeof(struct sFMextra) +
-                              sizeof(struct sVoice) * (MidiOutDev[wDevID].caps.wVoices - 1));
+                              offsetof(struct sFMextra, voice[MidiOutDev[wDevID].caps.wVoices]));
 
 	    if (extra == 0) {
 		WARN("can't alloc extra data !\n");