Use ctor-initializer rather than assignment for non-POD class members

src/propgrid/props.cpp

@@ -2710,8 +2710,8 @@ wxArrayStringProperty::wxArrayStringProperty( const wxString& label,
                                                         const wxString& name,
                                                         const wxArrayString& array )
     : wxPGProperty(label,name)
+    , m_delimiter(',')
 {
-    m_delimiter = ',';
     SetValue( array );
 }