Set text layout direction earlier during window creation

Code later in the same function was using the direction before it was set

src/gtk/window.cpp

@@ -2803,6 +2803,8 @@ void wxWindowGTK::PostCreation()
 {
     wxASSERT_MSG( (m_widget != NULL), wxT("invalid window") );
 
+    SetLayoutDirection(wxLayout_Default);
+
     GTKConnectFreezeWidget(m_widget);
     if (m_wxwindow && m_wxwindow != m_widget)
         GTKConnectFreezeWidget(m_wxwindow);
@@ -2924,8 +2926,6 @@ void wxWindowGTK::PostCreation()
 
     InheritAttributes();
 
-    SetLayoutDirection(wxLayout_Default);
-
     // if the window had been disabled before being created, it should be
     // created in the initially disabled state
     if ( !m_isEnabled )