Fix for potential layout glitches in wxGridBagSizer when items span cells but

some other item affects the size of one of spanned rows/cols.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@52987 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/gbsizer.h

@@ -286,6 +286,7 @@ public:
 
 protected:
     wxGBPosition FindEmptyCell();
+    void AdjustForOverflow();
 
     wxSize m_emptyCellSize;