Update ui.py

Added:
- try-finally Block: This makes sure the camera.release() is called no matter how the while loops end.
- Resource Cleanup: The finally block takes care of cleaning up resources to keep the application stable.

modules/ui.py

@@ -795,6 +795,7 @@ def create_webcam_preview(camera_index: int):
     frame_count = 0
     fps = 0
 
+    try:
         while camera:
             ret, frame = camera.read()
             if not ret:
@@ -860,11 +861,12 @@ def create_webcam_preview(camera_index: int):
 
             if PREVIEW.state() == "withdrawn":
                 break
-
+    finally:
         camera.release()
         PREVIEW.withdraw()
 
 
+
 def create_source_target_popup_for_webcam(
     root: ctk.CTk, map: list, camera_index: int
 ) -> None: