prevent for bsods

diff --git a/lib/python/Screens/InfoBarGenerics.py b/lib/python/Screens/InfoBarGenerics.py
index 528bca2e3bce0d2b023cadc7199472e7642fd393..be77021042f3397e2869151a9efe7ee2b69630b9 100644 (file)
--- a/lib/python/Screens/InfoBarGenerics.py
+++ b/lib/python/Screens/InfoBarGenerics.py
@@ -1276,8 +1276,8 @@ class InfoBarSubserviceSelection:
        def checkSubservicesAvail(self, ev):
                if ev == iPlayableService.evUpdatedEventInfo:
                        service = self.session.nav.getCurrentService()
-                       subservices = service.subServices()
-                       if subservices.getNumberOfSubservices() == 0:
+                       subservices = service and service.subServices()
+                       if not subservices or subservices.getNumberOfSubservices() == 0:
                                self["SubserviceQuickzapAction"].setEnabled(False)
 
        def nextSubservice(self):
@@ -1288,9 +1288,9 @@ class InfoBarSubserviceSelection:
 
        def changeSubservice(self, direction):
                service = self.session.nav.getCurrentService()
-               subservices = service.subServices()
-               n = subservices.getNumberOfSubservices()
-               if n > 0:
+               subservices = service and service.subServices()
+               n = subservices and subservices.getNumberOfSubservices()
+               if n and n > 0:
                        selection = -1
                        ref = self.session.nav.getCurrentlyPlayingServiceReference()
                        for x in range(n):
@@ -1310,11 +1310,11 @@ class InfoBarSubserviceSelection:
 
        def subserviceSelection(self):
                service = self.session.nav.getCurrentService()
-               subservices = service.subServices()
+               subservices = service and service.subServices()
                
-               n = subservices.getNumberOfSubservices()
+               n = subservices and subservices.getNumberOfSubservices()
                selection = 0
-               if n > 0:
+               if n and n > 0:
                        ref = self.session.nav.getCurrentlyPlayingServiceReference()
                        tlist = []
                        for x in range(n):