Merge branch 'ab/mark-leak-free-tests-more'

Bunch of tests are marked as "passing leak check". * ab/mark-leak-free-tests-more: merge: add missing strbuf_release() ls-files: add missing string_list_clear() ls-files: fix a trivial dir_clear() leak tests: fix test-oid-array leak, test in SANITIZE=leak tests: fix a memory leak in test-oidtree.c tests: fix a memory leak in test-parse-options.c tests: fix a memory leak in test-prio-queue.c