Make JsSIP.URI.parse() to return undefined rather than null if an invalid URI is given.
Make JsSIP.URI.parse() to return undefined rather than null if an invalid URI is given.

vconsult/JsSIP,voxbone/JsSIP,dpocock/JsSIP,rusekr/JsSIP,tqcenglish/JsSIP,josephfrazier/SIP.js,Escaux/SIP.js,DrumTechnologiesLtd/JsSIP,onsip/SIP.js,CodeYellowBV/JsSIP,ronlobo/SIP.js,markandrus/SIP.js,AaronZhangL/JsSIP,Voiceworks/SIP.js,onsip/SIP.js,joseph-onsip/SIP.js