Handle the firstVisible item being NULL in

TREEVIEW_UpdateScrollBars().

Handle the firstVisible item being NULL in
a752885c · Steve Lustbader · Alexandre Julliard · 939d9ca3 · a752885c
Commit a752885c authored Mar 01, 2004 by Steve Lustbader Committed by Alexandre Julliard Mar 01, 2004
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treeview.c dlls/comctl32/treeview.c +1 -1

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--- a/dlls/comctl32/treeview.c
+++ b/dlls/comctl32/treeview.c
@@ -2599,7 +2599,7 @@ TREEVIEW_UpdateScrollBars(TREEVIEW_INFO *infoPtr)
    if (vert)
    {
 	si.nPage = TREEVIEW_GetVisibleCount(infoPtr);
-       if ( si.nPage )
+       if ( si.nPage && NULL != infoPtr->firstVisible)
       {
           si.nPos  = infoPtr->firstVisible->visibleOrder;
           si.nMax  = infoPtr->maxVisibleOrder - 1;