sort members

GUI/View/Device/SpanForm.h

@@ -36,8 +36,9 @@ signals:
     void changedSpanData(); // TODO is UNUSED
 
 private:
-    QSpinBox* m_nbins_spin_box;
     SpanProperty* m_span_property;
+
+    QSpinBox* m_nbins_spin_box;
     DSpinBox* m_width_spin_box;
     DSpinBox* m_center_spin_box;