xfs: remove the name == NULL check from xfs_attr_args_init

xfs: remove the name == NULL check from xfs_attr_args_init

Source kernel commit: 79f2280b9bfd54aa37b3fa4a80b0037bd29b4f0e

All callers provide a valid name pointer, remove the redundant check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>