added calls for invalidating the dc setup on mac explicitely (needed in case of nested updates (e.g. writing a message to a text control while being in paint mode)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@9438 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/toolbar.cpp

@@ -536,6 +536,7 @@ void wxToolBar::OnPaint(wxPaintEvent& event)
 				}
 			}
 			UMASetThemeWindowBackground( win->MacGetWindowData()->m_macWindow , win->MacGetWindowData()->m_macWindowBackgroundTheme , false ) ;
+			wxDC::MacInvalidateSetup() ;
 		}
 	}
 }