[greatlrd] 20017: Take care of one BSOD in NtGdiDdCreateDirectDrawObject, it is not correct fix, it is a work around, the HDC can be NULL. it prevent some bsod for my new test apps for directx

Take care of one BSOD in NtGdiDdCreateDirectDrawObject, it is not
correct fix, it is a work around, the HDC can be NULL. it prevent some
bsod for my new test apps for directx
Modified: trunk/reactos/subsys/win32k/ntddraw/ddraw.c
  _____  

Modified: trunk/reactos/subsys/win32k/ntddraw/ddraw.c
--- trunk/reactos/subsys/win32k/ntddraw/ddraw.c	2005-12-09 19:28:04 UTC
(rev 20016)
+++ trunk/reactos/subsys/win32k/ntddraw/ddraw.c	2005-12-09 20:40:52 UTC
(rev 20017)
@@ -48,7 +48,13 @@

 	RtlZeroMemory(&palette_callbacks, sizeof(DD_PALETTECALLBACKS));
 	palette_callbacks.dwSize = sizeof(DD_PALETTECALLBACKS);
 
-	
+	/* FIXME hdc can be zero for d3d9 */
+    /* we need create it, if in that case */
+	if (hdc == NULL)
+	{
+	    return NULL;
+    }
+    
 	DC *pDC = DC_LockDc(hdc);
 	if (!pDC)
 		return NULL;