[cwittich] 18517: fixed "index out of range"

fixed "index out of range"
Modified: trunk/reactos/subsys/system/welcome/welcome.c
  _____

Modified: trunk/reactos/subsys/system/welcome/welcome.c
--- trunk/reactos/subsys/system/welcome/welcome.c	2005-10-17
12:41:52 UTC (rev 18516)
+++ trunk/reactos/subsys/system/welcome/welcome.c	2005-10-17
12:44:16 UTC (rev 18517)
@@ -566,7 +566,7 @@

0,
         SRCCOPY);
     }
-  else if (hTopicBitmap[nTopic] != 0)
+  else if ((nTopic != -1) && (hTopicBitmap[nTopic] != 0))
     {
       GetObject(hTopicBitmap[nTopic], sizeof(BITMAP), &bmpInfo);
       hOldBitmap = SelectObject (hdcMem, hTopicBitmap[nTopic]);