tune2fs: fix memory leak in inode_scan_and_fix()

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>

misc/tune2fs.c

@@ -1603,6 +1603,7 @@ static int inode_scan_and_fix(ext2_filsys fs, ext2fs_block_bitmap bmap)
 
 err_out:
 	ext2fs_free_mem(&block_buf);
+	ext2fs_close_inode_scan(scan);
 
 	return retval;
 }