plugin XEP-0163: user event mood with no item fix

src/plugins/plugin_xep_0163.py

@@ -101,6 +101,9 @@ class XEP_0163():
         return self.pep_out_cb[event_type](data, profile)
 
     def userMoodCB(self, itemsEvent, profile):
+        if not itemsEvent.items:
+            debug(_("No item found"))
+            return
         try:
             mood_elem = filter(lambda x:x.name == "mood", itemsEvent.items[0].children)[0]
         except KeyError: