Multi object editing - UV_OT_select_pinned. Task from T54645.
Removed unnecessary variable declaration.
Removed unnecessary variable declaration - second attempt.
Need to check if WM_event_add_notifier is only called when needed.
Only call WM_event_add_notifier when something may have changed.
Thanks for the patch. Committed on rB9947011ade7459917384be18128b0d4cccfdbf9f.
I did some minor changes on code style (we use space between BM_ITER_ELEM and its following (.