Better vertical height for choice/combo

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@43119 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/choice.cpp

@@ -359,6 +359,7 @@ wxSize wxChoice::DoGetBestSize() const
         wxCoord width, height ;
         dc.GetTextExtent( wxT("X"), &width, &height);
         int cx = width ;
+        lbHeight += 4;
 #else
         // And just a bit more
         int cx = ::TextWidth( "X" , 0 , 1 ) ;