When we use ext2fs_open_inode_scan() to iterate inodes and finish
jobs, we also need a ext2fs_close_inode_scan(scan) operation, but in
inode_scan_and_fix(), we forgot to call it, fix this error.
Signed-off-by: Xiaoguang Wang <wangxg.fnst@cn.fujitsu.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>