Eric Pouech : mciwave: Correctly handle error return status from mmioRead.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 90ecf27d096c8165d3409513ae1cd3f55ab2d8b5
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=90ecf27d096c8165d3409513a...

Author: Eric Pouech <eric.pouech(a)gmail.com>
Date:   Wed Mar 30 14:57:38 2022 +0200

mciwave: Correctly handle error return status from mmioRead.

Signed-off-by: Eric Pouech <eric.pouech(a)gmail.com>
Signed-off-by: Andrew Eikum <aeikum(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/mciwave/mciwave.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/mciwave/mciwave.c b/dlls/mciwave/mciwave.c
index 1d9abce84a3..3ca884ed6e0 100644
--- a/dlls/mciwave/mciwave.c
+++ b/dlls/mciwave/mciwave.c
@@ -291,7 +291,7 @@ static	DWORD WAVE_mciReadFmt(WINE_MCIWAVE* wmw, const MMCKINFO* pckMainRIFF)
     if (!pwfx) return MCIERR_OUT_OF_MEMORY;
 
     r = mmioRead(wmw->hFile, (HPSTR)pwfx, mmckInfo.cksize);
-    if (r < sizeof(PCMWAVEFORMAT)) {
+    if (r < 0 || r < sizeof(PCMWAVEFORMAT)) {
 	HeapFree(GetProcessHeap(), 0, pwfx);
 	return MCIERR_INVALID_FILE;
     }