jffs2: constify xattr_handler

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c
index 8544af6..916b5c9 100644
--- a/fs/jffs2/xattr_user.c
+++ b/fs/jffs2/xattr_user.c
@@ -47,7 +47,7 @@
 	return retlen;
 }
 
-struct xattr_handler jffs2_user_xattr_handler = {
+const struct xattr_handler jffs2_user_xattr_handler = {
 	.prefix = XATTR_USER_PREFIX,
 	.list = jffs2_user_listxattr,
 	.set = jffs2_user_setxattr,