[Merge] lp:~tiagosh/telephony-service/fix-message-to-self-contact into lp:telephony-service

[Gustavo Pichorim Boiko]

Review: Needs Fixing

Good catch!
I think this one is worth a comment in the code saying "make sure we compare the recipient with the channel".

Also, could you please write a unit test covering this case?
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https://code.launchpad.net/~tiagosh/telephony-service/fix-message-to-self-contact/+merge/287522
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