Move wxComboBox::Clear() out of line in wxQt

No real changes.

include/wx/qt/combobox.h

@@ -63,11 +63,7 @@ public:
         return wxItemContainer::GetStringSelection();
     }
 
-    virtual void Clear() wxOVERRIDE
-    {
-        wxTextEntry::Clear();
-        wxItemContainer::Clear();
-    }
+    virtual void Clear() wxOVERRIDE;
 
     // See wxComboBoxBase discussion of IsEmpty().
     bool IsListEmpty() const { return wxItemContainer::IsEmpty(); }

src/qt/combobox.cpp

@@ -133,6 +133,12 @@ void wxComboBox::Dismiss()
     static_cast<QComboBox *>(GetHandle())->hidePopup();
 }
 
+void wxComboBox::Clear()
+{
+    wxTextEntry::Clear();
+    wxItemContainer::Clear();
+}
+
 void wxComboBox::SetSelection( long from, long to )
 {
     // SelectAll uses -1 to -1, adjust for qt: