Evan Stade : gdiplus: Better error checking in GdipBitmapLockBits.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ff752456e123ded9d77a4654b7889709638a7aaa
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=ff752456e123ded9d77a4654b7889709638a7aaa

Author: Evan Stade <estade at gmail.com>
Date:   Thu Aug  9 18:25:27 2007 -0700

gdiplus: Better error checking in GdipBitmapLockBits.

---

 dlls/gdiplus/image.c |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/dlls/gdiplus/image.c b/dlls/gdiplus/image.c
index a6cf671..633b225 100644
--- a/dlls/gdiplus/image.c
+++ b/dlls/gdiplus/image.c
@@ -142,16 +142,20 @@ GpStatus WINGDIPAPI GdipBitmapLockBits(GpBitmap* bitmap, GDIPCONST GpRect* rect,
     stride = (stride + 3) & ~3;
 
     buff = GdipAlloc(stride * abs_height);
-    if(!buff)   return OutOfMemory;
 
     bmi.bmiHeader.biBitCount = bitspp;
-    GetDIBits(hdc, (HBITMAP)hbm, 0, abs_height, buff, &bmi, DIB_RGB_COLORS);
+
+    if(buff)
+        GetDIBits(hdc, (HBITMAP)hbm, 0, abs_height, buff, &bmi, DIB_RGB_COLORS);
 
     if(!bm_is_selected){
         SelectObject(hdc, old);
         DeleteDC(hdc);
     }
 
+    if(!buff)
+        return OutOfMemory;
+
     lockeddata->Width = rect->Width;
     lockeddata->Height = rect->Height;
     lockeddata->PixelFormat = format;