Merge branch 'lp/http-fetch-pack-index-leak-fix'

A memory leak in `fetch_and_setup_pack_index()` when verification of the downloaded pack index fails has been plugged. Also an obsolete `unlink()` call on parse failure has been cleaned up. * lp/http-fetch-pack-index-leak-fix: http: fix memory leak in fetch_and_setup_pack_index() http: cleanup function fetch_and_setup_pack_index()