chore: fix linting

Author: daviddias

src/protocol-muxer.js

@@ -16,7 +16,7 @@ module.exports = function protocolMuxer (protocols, observer) {
       const handler = (protocolName, _conn) => {
         const protocol = protocols[protocolName]
         if (protocol) {
-          const handlerFunc =  protocol && protocol.handlerFunc
+          const handlerFunc = protocol && protocol.handlerFunc
           if (handlerFunc) {
             const conn = observeConn(null, protocol, _conn, observer)
             handlerFunc(protocol, conn)