Fix #164. Initialize 'registrator' in the 'UA' constructor. Thanks @nilsonfreitas
Fix #164. Initialize 'registrator' in the 'UA' constructor. Thanks @nilsonfreitas

- registrator is an internal UA element which must be initializated in the constructor

AaronZhangL/JsSIP,rusekr/JsSIP,voxbone/JsSIP,tqcenglish/JsSIP,dpocock/JsSIP,vconsult/JsSIP,DrumTechnologiesLtd/JsSIP,CodeYellowBV/JsSIP