[PATCH] Remove uneeded dentry assignment

From: James Morris <jmorris@redhat.com>

It seems to me that this dentry assignment in open_namei is not needed per
the patch below.  On this path, dentry is not referenced.

fs/namei.c

@@ -1260,7 +1260,6 @@ int open_namei(const char * pathname, int flag, int mode, struct nameidata *nd)
 		error = path_lookup(pathname, lookup_flags(flag)|LOOKUP_OPEN, nd);
 		if (error)
 			return error;
-		dentry = nd->dentry;
 		goto ok;
 	}