xfs_repair: set args.geo in longform_dir2_entry_check_data

xfs_repair: set args.geo in longform_dir2_entry_check_data

Here's another one where we miss setting da_args->geo:

longform_dir2_entry_check_data
        struct xfs_da_args      da = {
                .dp = ip,
		// .geo is unset
        };
...
	libxfs_dir2_data_make_free(&da ...)
		xfs_dir2_data_make_free
			endptr = (char *)hdr + args->geo->blksize;
				BOOM

Addresses-Coverity-Id: 1298008
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>