[tfaber] 74973: [GDI32] - Check for lpResults == NULL in GetCharacterPlacementA. Patch by Doug Lyons. Fixes crash in gdi32_winetest:font CORE-13401 #resolve

Author: tfaber
Date: Fri Jun  9 11:14:11 2017
New Revision: 74973

URL: http://svn.reactos.org/svn/reactos?rev=74973&view=rev
Log:
[GDI32]
- Check for lpResults == NULL in GetCharacterPlacementA. Patch by Doug Lyons. Fixes crash in gdi32_winetest:font
CORE-13401 #resolve

Modified:
    trunk/reactos/win32ss/gdi/gdi32/objects/font.c

Modified: trunk/reactos/win32ss/gdi/gdi32/objects/font.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/win32ss/gdi/gdi32/objects/f...
==============================================================================
--- trunk/reactos/win32ss/gdi/gdi32/objects/font.c	[iso-8859-1] (original)
+++ trunk/reactos/win32ss/gdi/gdi32/objects/font.c	[iso-8859-1] Fri Jun  9 11:14:11 2017
@@ -385,7 +385,7 @@
     DWORD ret;
     UINT font_cp;

-    if ( !lpString || uCount <= 0 || (nMaxExtent < 0 && nMaxExtent != -1 ) )
+    if ( !lpString || uCount <= 0 || !lpResults || (nMaxExtent < 0 && nMaxExtent != -1 ) )
     {
         SetLastError(ERROR_INVALID_PARAMETER);
         return 0;