fix potential ConcurrentModificationException in LooperLogger (#13646)
fix potential ConcurrentModificationException in LooperLogger (#13646)

Co-authored-by: eddiemuc <7af9a61f1ebe2e2305d3e352b17e293400bdff5e@cgeo.org>
cgeo/cgeo,cgeo/cgeo,cgeo/cgeo,cgeo/cgeo