assert when the item index is out of range in wxMSW's listctrl, just like generic listctrl does

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58055 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/listctrl.cpp

@@ -1162,6 +1162,10 @@ bool wxListCtrl::GetSubItemRect(long item, long subItem, wxRect& rect, int code)
                     (subItem >= 0 && subItem < GetColumnCount()),
                  false, _T("invalid sub item index") );
 
+    // use wxCHECK_MSG against "item" too, for coherency with the generic implementation:
+    wxCHECK_MSG( item >= 0 && item < GetItemCount(), false,
+                 _T("invalid item in GetSubItemRect") );
+
     int codeWin;
     if ( code == wxLIST_RECT_BOUNDS )
         codeWin = LVIR_BOUNDS;