From: Sylvain Petreolle <spetreolle@yahoo.fr>
Date: Sat, 24 Oct 2009 15:13:30 +0000 (+0000)
Subject: add missing checks
X-Git-Tag: ReactOS-0.3.11~321
X-Git-Url: https://git.reactos.org/?p=reactos.git;a=commitdiff_plain;h=3a8773297fb381e66663e20403c429c36c49cb4a

add missing checks
fixes winmm:mixer crash

svn path=/trunk/; revision=43717
---

diff --git a/reactos/dll/win32/winmm/winmm.c b/reactos/dll/win32/winmm/winmm.c
index 325f0d5f5b3..c33fed12277 100644
--- a/reactos/dll/win32/winmm/winmm.c
+++ b/reactos/dll/win32/winmm/winmm.c
@@ -568,6 +568,9 @@ UINT WINAPI mixerGetLineInfoW(HMIXEROBJ hmix, LPMIXERLINEW lpmliW, DWORD fdwInfo
 
     TRACE("(%p, %p, %08lx)\n", hmix, lpmliW, fdwInfo);
 
+    if (lpmliW == NULL || lpmliW->cbStruct != sizeof(*lpmliW))
+	return MMSYSERR_INVALPARAM;
+	
     if ((uRet = MIXER_GetDev(hmix, fdwInfo, &lpwm)) != MMSYSERR_NOERROR)
 	return uRet;