Make sure text part of combobox is enabled/disabled too

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@34889 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/carbon/combobox.cpp

@@ -295,6 +295,9 @@ bool wxComboBox::Enable(bool enable)
     if ( !wxControl::Enable(enable) )
         return false;
 
+    if (m_text)
+        m_text->Enable(enable);
+
     return true;
 }