Fix fsm.update messages being thiggered without a state change

tfw/fsm/fsm_base.py

@@ -1,6 +1,7 @@
 import logging
 from collections import defaultdict
 from datetime import datetime
+from contextlib import suppress
 
 from transitions import Machine, MachineError
 
@@ -62,14 +63,12 @@ class FSMBase(Machine, CallbackMixin):
         )
 
         if all(predicate_results):
-            try:
+            with suppress(AttributeError, MachineError):
                 from_state = self.state
-                self.trigger(trigger)
-                self.update_event_log(from_state, trigger)
-                return True
-            except (AttributeError, MachineError):
-                LOG.debug('FSM failed to execute nonexistent trigger: "%s"', trigger)
-        return False
+                if self.trigger(trigger):
+                    self.update_event_log(from_state, trigger)
+                    return True
+            LOG.debug('FSM failed to execute nonexistent trigger: "%s"', trigger)
 
     def update_event_log(self, from_state, trigger):
         self.event_log.append({