turnserver: Strip newline from response. #712
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I noticed warnings like these in my dovecot logs:
Looking at https://github.com/chatmail/chatmail-turn/blob/main/src/main.rs#L43 it seems the turn server writes a newline-terminated response, but that newline was never stripped off and passed as-is to the dict client via https://github.com/chatmail/relay/blob/main/chatmaild/src/chatmaild/metadata.py#L106, which confuses dovecot.