Does access out of array in DPA_QuickSort

[Uwe Bonnes <bon@elektron.ikp.physik.tu-darmstadt.de>]

Changelog:
	dlls/comctl32/comctl32undoc.c: DPA_QuickSort
	Don't give NULL pointers to the Compare function

-- 
Uwe Bonnes                bon@elektron.ikp.physik.tu-darmstadt.de

Free Software: If you contribute nothing, expect nothing
--
Index: wine/dlls/comctl32/comctl32undoc.c
===================================================================
RCS file: /home/wine/wine/dlls/comctl32/comctl32undoc.c,v
retrieving revision 1.63
diff -u -r1.63 comctl32undoc.c
--- wine/dlls/comctl32/comctl32undoc.c	16 May 2002 18:58:47 -0000	1.63
+++ wine/dlls/comctl32/comctl32undoc.c	25 May 2002 17:50:13 -0000
@@ -2112,7 +2112,7 @@
     /* join the two sides */
     while( (l<=m) && (m<r) ) 
     {
-        if(pfnCompare(lpPtrs[l],lpPtrs[m+1],lParam)>0)
+        if(lpPtrs[l] && lpPtrs[m+1] && pfnCompare(lpPtrs[l],lpPtrs[m+1],lParam)>0)
         {
             t = lpPtrs[m+1];
             memmove(&lpPtrs[l+1],&lpPtrs[l],(m-l+1)*sizeof lpPtrs[l]);