CC-5098: Liquidsoap: Restart liquidsoap will make the output stream silence until next song starts

-fixed

python_apps/pypo/pypofetch.py

@@ -174,6 +174,8 @@ class PypoFetch(Thread):
         commands.append(('vars.default_dj_fade %s\n' % fade).encode('utf-8'))
         self.pypo_liquidsoap.get_telnet_dispatcher().telnet_send(commands)
 
+        self.pypo_liquidsoap.clear_queue_tracker()
+
     def restart_liquidsoap(self):
         try:
             self.telnet_lock.acquire()

python_apps/pypo/pypoliquidsoap.py

@@ -195,6 +195,10 @@ class PypoLiquidsoap():
     def is_file(self, media_item):
         return media_item["type"] == eventtypes.FILE
 
+    def clear_queue_tracker(self):
+        for i in self.liq_queue_tracker.keys():
+            self.liq_queue_tracker[i] = None
+
     def modify_cue_point(self, link):
         if not self.is_file(link):
             return