fix(console) execute: on(kill) -> once(kill), removeListener

Author: coderaiser

lib/server/console.js

@@ -99,13 +99,15 @@
 
     function execute(socket, command, cwd) {
         var isDone,
-            spawn = spawnify(command, {
+            spawn   = spawnify(command, {
                 cwd: cwd()
-            });
+            }),
+            
+            kill    = function() {
+                spawn.kill();
+            };
 
-        socket.on('kill', function() {
-            spawn.kill();
-        });
+        socket.once('kill', kill);
 
         spawn.on('error', function(error) {
             isDone = true;
@@ -127,6 +129,8 @@
         });
 
         spawn.on('close', function() {
+            socket.removeListener('kill', kill);
+            
             if (!isDone);
                 socket.emit('data', '');
         });