BUG: fingerprint updates fail due to missing socket id

stack trace:

20-10-22 13:28:06    
TypeError: Cannot read property 'acquire' of undefined
    2020-10-22 13:28:06    
[dispatcher | 2020-10-22T17:28:06.833Z] Cannot read property 'acquire' of undefined
    2020-10-22 13:23:52    
at Object.updateFingerprint (/signalboost/app/registrar/safetyNumbers.js:18:12)
    2020-10-22 13:23:52    
at trustAndResend (/signalboost/app/registrar/safetyNumbers.js:29:36)
    2020-10-22 13:23:52    
at Object.trust (/signalboost/app/signal/index.js:231:33)
    2020-10-22 13:23:52    
at Object.write (/signalboost/app/socket/write.js:17:10)
    2020-10-22 13:23:52    
at new Promise (<anonymous>)
    2020-10-22 13:23:52    
at Promise (/signalboost/app/socket/write.js:19:8)

problem code:

• https://0xacab.org/team-friendo/signalboost/-/blob/main/app/registrar/safetyNumbers.js#L29
• this call to trust omits a socket id.
• to get the correct socket id for thsi channel, we need to make a db call to retrieve the socket id based on the channel phone number.
• we can use repositories.channel.getSocketId(channelPhoneNumber) to do that!