Issue #53: Fixed warning about using getter for side effect new in Xcode 6.3
Issue #53: Fixed warning about using getter for side effect new in Xcode 6.3

alessandrostone/MIKMIDI,alessandrostone/MIKMIDI,bamboostick/MIKMIDI,bamboostick/MIKMIDI,alessandrostone/MIKMIDI,bamboostick/MIKMIDI