don't bother with ->d_inode->i_sb - it's always equal to ->d_sb

... and neither can ever be NULL

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 30c4c9e..7a9579e 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -241,7 +241,7 @@
 
 static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct dentry *dentry)
 {
-	struct jffs2_sb_info *c = JFFS2_SB_INFO(d_inode(old_dentry)->i_sb);
+	struct jffs2_sb_info *c = JFFS2_SB_INFO(old_dentry->d_sb);
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(d_inode(old_dentry));
 	struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
 	int ret;