[JFFS2][XATTR] remove senseless comment

remove senseless comment.

[8/10] jffs2-xattr-v5.1-08-remove_senseless_comment.patch

Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>
diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
index 07cc737..e2aa239 100644
--- a/fs/jffs2/xattr.h
+++ b/fs/jffs2/xattr.h
@@ -38,7 +38,7 @@
 	uint32_t value_len;	/* length of xvalue */
 };
 
-struct jffs2_inode_cache;	/* forward refence */
+struct jffs2_inode_cache;
 struct jffs2_xattr_ref
 {
 	void *always_null;