message: Trim whitespace from source
diff: @@ -1282,7 +1282,7 @@ MatrixHandler.prototype._sendIrcAction = Promise.coroutine(
  // Somehow we failed, so fallback to userid.
  rplName = match[1].substr(1, Math.min(REPLY_NAME_MAX_LENGTH, userid.indexOf(":") - 1));
  }
  - text = `<reply to ${rplName} "${rplSource}"> ${rplText}`;
  + text = `<${rplName} "${rplSource.trim()}"> ${rplText}`;
  ircAction.text = text;
  }
  }
  