xfs: fix two memory leaks in xfs_attr_list.c error paths

xfs: fix two memory leaks in xfs_attr_list.c error paths

Orabug: 23331078

[ Upstream commit 2e83b79b2d6c78bf1b4aa227938a214dcbddc83f ]

This plugs 2 trivial leaks in xfs_attr_shortform_list and
xfs_attr3_leaf_list_int.

Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
(cherry picked from commit 594103da3005639712b3123a612791c8f4d3f4e9)

Signed-off-by: Dan Duval <dan.duval@oracle.com>