xfs: fix uflags detection at xfs_fs_rm_xquota

We are intended to check up uflags against FS_PROJ_QUOTA rather than
FS_USER_UQUOTA once more, it looks to me like a typo, but might cause
the project quota metadata space can not be removed.
Signed-off-by: NJie Liu <jeff.liu@oracle.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NDave Chinner <david@fromorbit.com>

fs/xfs/xfs_quotaops.c

@@ -123,7 +123,7 @@ xfs_fs_rm_xquota(
 		flags |= XFS_DQ_USER;
 	if (uflags & FS_GROUP_QUOTA)
 		flags |= XFS_DQ_GROUP;
-	if (uflags & FS_USER_QUOTA)
+	if (uflags & FS_PROJ_QUOTA)
 		flags |= XFS_DQ_PROJ;
 
 	return xfs_qm_scall_trunc_qfiles(mp, flags);