Merge branch 'jk/unleak-mmap'

Plug a few leaks where mmap'ed memory regions are not unmapped. * jk/unleak-mmap: meson: turn on NO_MMAP when building with LSan Makefile: turn on NO_MMAP when building with LSan object-file: fix mmap() leak in odb_source_loose_read_object_stream() pack-revindex: avoid double-loading .rev files check_connected(): fix leak of pack-index mmap check_connected(): delay opening new_pack