Revert "net: don't normalize twice in Socket#connect()"

This reverts commit bb06add.
This commit was causing failures in the async-listener module,
which monkey patches Socket.prototype.connect().

lib/net.js

@@ -95,7 +95,7 @@ function connect() {
     socket.setTimeout(options.timeout);
   }
 
-  return realConnect.call(socket, options, cb);
+  return Socket.prototype.connect.call(socket, options, cb);
 }
 
 
@@ -919,14 +919,10 @@ Socket.prototype.connect = function() {
   for (var i = 0; i < arguments.length; i++)
     args[i] = arguments[i];
   // TODO(joyeecheung): use destructuring when V8 is fast enough
-  var normalized = normalizeArgs(args);
-  var options = normalized[0];
-  var cb = normalized[1];
-  return realConnect.call(this, options, cb);
-};
+  const normalized = normalizeArgs(args);
+  const options = normalized[0];
+  const cb = normalized[1];
 
-
-function realConnect(options, cb) {
   if (this.write !== Socket.prototype.write)
     this.write = Socket.prototype.write;
 
@@ -967,7 +963,7 @@ function realConnect(options, cb) {
     lookupAndConnect(this, options);
   }
   return this;
-}
+};
 
 
 function lookupAndConnect(self, options) {