kbx: Fix resource leak.
* kbx/keybox-update.c (blob_filecopy): Fix resource leak. On error return, 'fp' and 'newfp' was never closed.
[Log entry reformatted, and added more fixes - gniibe]
(cherry picked from commit 7db6c82cec49b7c56c403a8ea98364086baf75f3)
- Signed-off-by: Joshua Rogers <git@internot.info>