[orca] Merge two ifs to reduce unnecessary condition check

[Joanmarie Diggs <joanied src gnome org>]

commit 3b5d353137a1d406c9f176f676ea9bab8ce04668
Author: Fushan Wen <qydwhotmail gmail com>
Date:   Sat Jul 23 21:04:45 2022 +0800

    Merge two ifs to reduce unnecessary condition check

 src/orca/event_manager.py | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/orca/event_manager.py b/src/orca/event_manager.py
index 6a45d949c..59f23032c 100644
--- a/src/orca/event_manager.py
+++ b/src/orca/event_manager.py
@@ -770,9 +770,8 @@ class EventManager:
         
         if not script:
             script = self._getScriptForEvent(event)
-
-        if not script:
-            return False, "There is no script for this event."
+            if not script:
+                return False, "There is no script for this event."
 
         if script == orca_state.activeScript:
             return False, "The script for this event is already active."