Fix error 252 console output when there is a timeout while using the CLI

lib/tools/phantomas/phantomasWrapper.js

@@ -151,6 +151,11 @@ var PhantomasWrapper = function() {
                 }
 
                 cb(errorCode, json);
+            
+            }).fail(function() {
+                // This function is useless, but the failing promise needs to be handled,
+                // otherwise the module meow writes in the console in case of a timeout (error code 252).
+                debug('Failing promise handled');
             });
             
             phantomasPid = process.pid;