two bug fix

pyspider/libs/utils.py

@@ -434,6 +434,7 @@ def python_console(namespace=None):
 def check_port_open(port, addr='127.0.0.1'):
     sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
     result = sock.connect_ex((addr, port))
+    sock.close()
     if result == 0:
         return True
     else:

pyspider/scheduler/scheduler.py

@@ -349,7 +349,7 @@ def _check_task_done(self):
         '''Check status queue'''
         cnt = 0
         try:
-            while True:
+            while cnt <= self.LOOP_LIMIT:
                 task = self.status_queue.get_nowait()
                 # check _on_get_info result here
                 if task.get('taskid') == '_on_get_info' and 'project' in task and 'track' in task: