new layout was messing with separator positions

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32153 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/toolbar.cpp

@@ -99,8 +99,10 @@ public:
         {
             // separator size
             wxSize sz = GetToolBar()->GetToolSize() ;
-            sz.x /= 4 ;
+            if ( GetToolBar()->GetWindowStyleFlag() & wxTB_VERTICAL )
                 sz.y /= 4 ;
+            else
+                sz.x /= 4 ;
             return sz ;
         }
     }