[gschneider] 42899: GetCharacterPlacementA: check FONT_mbtowc return value for validity

Author: gschneider
Date: Mon Aug 24 02:00:06 2009
New Revision: 42899

URL: http://svn.reactos.org/svn/reactos?rev=42899&view=rev
Log:
GetCharacterPlacementA: check FONT_mbtowc return value for validity

Modified:
    trunk/reactos/dll/win32/gdi32/objects/font.c

Modified: trunk/reactos/dll/win32/gdi32/objects/font.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/gdi32/objects/fo…
==============================================================================
--- trunk/reactos/dll/win32/gdi32/objects/font.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/gdi32/objects/font.c [iso-8859-1] Mon Aug 24 02:00:06 2009
@@ -323,6 +323,10 @@
     memcpy(&resultsW, lpResults, sizeof(resultsW));
 
     lpStringW = FONT_mbtowc(hdc, lpString, uCount, &uCountW, &font_cp);
+    if (lpStringW == NULL)
+    {
+        return 0;
+    }
     if(lpResults->lpOutString)
     {
         resultsW.lpOutString = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR)*uCountW);