Merge branch 'ab/unpack-trees-leakfix'

Leakfix.

* ab/unpack-trees-leakfix:
  sequencer: fix a memory leak in do_reset()
  sequencer: add a "goto cleanup" to do_reset()
  unpack-trees: don't leak memory in verify_clean_subdirectory()

diff --cc sequencer.c
Simple merge

diff --cc unpack-trees.c
Simple merge