Prevent emitting socket event when socket is not ready yet.

Author: SpaceK33z

lib/Server.js

@@ -24,12 +24,14 @@ function Server(compiler, options) {
 	this.headers = options.headers;
 
 	this.sockWrite = function(type, data) {
-		this.sock.write(JSON.stringify({type: type, data: data}));
+		if (this.sock) {
+			this.sock.write(JSON.stringify({type: type, data: data}));
+		}
 	}
 
 	// Listening for events
 	var invalidPlugin = function() {
-		if(this.sock) this.sockWrite("invalid");
+		this.sockWrite("invalid");
 	}.bind(this);
 	compiler.plugin("compile", invalidPlugin);
 	compiler.plugin("invalid", invalidPlugin);