John Baldwin d2e17ce906 Clear the mountprog variable after each mountfs() call so that mountprog
options don't leak over into subsequent mounts listed in /etc/fstab.
While here, fix a memory leak in debug mode.

Reported by:	rank1seeker @ gmail
Approved by:	re (kib)
MFC after:	1 week
2011-09-02 17:11:59 +00:00
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