Fix: claim method returns an error if the port is not valid

Author: mgesmundo

lib/harbor.js

@@ -147,6 +147,8 @@ Harbor.prototype.claim = function (name, port, cb) {
       self.emit('claim', name, port);
       cb(null, port);
     });
+  } else {
+    return cb(new Error('No valid port.'));
   }
 };
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "harbor",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "description": "TCP port availability and assignment utility.",
   "main": "index.js",
   "scripts": {