mktree: plug per-tree leak in --batch mode

In --batch mode "git mktree" reuses its entry buffer across trees,
resetting `used` to 0 after writing each tree.  It never frees the
`treeent` structures the previous tree appended, though, so once the
next tree overwrites those slots the earlier allocations are leaked.  A
single-tree invocation hides this, as the entries stay reachable through
the `entries` global until exit.

Free each entry when resetting the buffer, and free the buffer itself
before returning.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

0 files changed, 0 insertions, 0 deletions