Next timeslot init. engine-clock#11

src/plugins/trackservice.py

@@ -326,6 +326,7 @@ class Playlog:
             self.init_timeslot(next_timeslot)
             
         # A valid following timeslot is available
+        self.next_timeslot = None
         if next_timeslot:
             ns = {}
             self.assign_fallback_playlist(ns, next_timeslot)