null comparison is sketchy

lib/connection.js

@@ -73,18 +73,18 @@ function Connection (options) {
 	};
 
 	for (var key in options) {
-		if (options[key] == null) {
+		if (options[key] === null || options[key] === undefined) {
 			debug("Option [" + key + "] set to null. This may cause unexpected behaviour.");
 		}
 	}
 
 	util.extend(this.options, options);
 
-	if (this.options.gateway != null) {
+	if (this.options.gateway) {
 		this.options.address = this.options.gateway;
 	}
 
-	if (this.options.address == null) {
+	if (!this.options.address) {
 		if (this.options.production) {
 			this.options.address = "gateway.push.apple.com";
 		}