websocket: fix a bug on emit on specific room when it doesn't exist it sends to all connections caused by a third-party contributor's PR...

Former-commit-id: de6fddadd7cef8537ad1d1aff1acd991e4cf99cf

websocket/connection.go

@@ -511,6 +511,7 @@ func (c *connection) To(to string) Emitter {
 	} else if to == c.id {
 		return c.self
 	}
+
 	// is an emitter to another client/connection
 	return newEmitter(c, to)
 }