changed error return for user access to trusted xattr

When a user queries an extended attribute in the trusted namespace,
the traditional error return was EPERM. This has been recently changed
to ENODATA. See https://lkml.org/lkml/2011/5/27/199

src/lowntfs-3g.c

@@ -2848,7 +2848,7 @@ static void ntfs_fuse_getxattr(fuse_req_t req, fuse_ino_t ino, const char *name,
 		/* trusted only readable by root */
 	if ((namespace == XATTRNS_TRUSTED)
 	    && security.uid) {
-		res = -EPERM;
+		res = -ENODATA;
 		goto out;
 	}
 #endif

src/ntfs-3g.c

@@ -2791,7 +2791,7 @@ static int ntfs_fuse_getxattr(const char *path, const char *name,
 		/* trusted only readable by root */
 	if ((namespace == XATTRNS_TRUSTED)
 	    && security.uid)
-		    return -EPERM;
+		    return -ENODATA;
 #endif
 	ni = ntfs_pathname_to_inode(ctx->vol, NULL, path);
 	if (!ni)