Fix for ConfBridge config parser unlocking channel mutex too many times

When looking up a ConfBridge profile, the config parser would, if it
found a channel datastore on the channel requesting the bridge profile,
unlock the channel mutex twice.  Since that's a little aggressive,
it now only unlocks it once.

(closes issue ASTERISK-19042)
Reported by: Matt Jordan
Tested by: Matt Jordan
Patches: 
  19042 uploaded by David Vossel (license 5628)
........

Merged revisions 349619 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@349634 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/confbridge/conf_config_parser.c

@@ -1332,9 +1332,10 @@ const struct user_profile *conf_find_user_profile(struct ast_channel *chan, cons
 				conf_user_profile_copy(result, &b_data->u_profile);
 				return result;
 			}
-		}
+		} else {
 			ast_channel_unlock(chan);
 		}
+	}
 
 	if (ast_strlen_zero(user_profile_name)) {
 		user_profile_name = DEFAULT_USER_PROFILE;