Return TRUE for TVM_EXPAND if treeview item is already expanded.

dlls/comctl32/treeview.c

diff --git a/dlls/comctl32/treeview.c b/dlls/comctl32/treeview.c
index b15d1c1..9d6880d 100644
--- a/dlls/comctl32/treeview.c
+++ b/dlls/comctl32/treeview.c
@@ -3093,7 +3093,7 @@
     TRACE("\n");
 
     if (wineItem->state & TVIS_EXPANDED)
-	return FALSE;
+       return TRUE;
 
     TRACE("TVE_EXPAND %p %s\n", wineItem, TREEVIEW_ItemName(wineItem));