Fixed movieSelected - part2 (#4178)

Co-authored-by: ims <ims21@users.sourceforge.net>
(cherry picked from commit 20cd2c8e0d97e950d4fcab42484ce6814f4e9e7d)

lib/python/Screens/InfoBar.py

@@ -552,7 +552,7 @@ def showMovies(self):
 		self.movieselection_dlg = self.session.openWithCallback(self.movieSelected, Screens.MovieSelection.MovieSelection, ref)
 
 	def movieSelected(self, service):
-		if service.valid():
+		if service is not None and service.valid():
 			if self.cur_service and self.cur_service != service:
 				resumePointsInstance.setResumePoint(self.session)
 			self.cur_service = service