AutomatableModel: fix member variable initialization order

Initialize member variables of AutomatableModel in order of their
declaration to fix compiler warning.

src/core/AutomatableModel.cpp

@@ -46,8 +46,8 @@ AutomatableModel::AutomatableModel( DataType _type,
 	Model( _parent, _display_name, _default_constructed ),
 	m_minValue( _min ),
 	m_maxValue( _max ),
-	m_dataType( _type ),
 	m_value( _val ),
+	m_dataType( _type ),
 	m_initValue( _val ),
 	m_step( _step ),
 	m_range( _max - _min ),