Fix cp-ubsan typo.

	* cp-ubsan.c (cp_ubsan_check_member_access_r): Fix handling of
	INDIRECT_REF of ADDR_EXPR.

From-SVN: r254711

gcc/cp/ChangeLog

 2017-11-13  Jason Merrill  <jason@redhat.com>
 
+	* cp-ubsan.c (cp_ubsan_check_member_access_r): Fix handling of
+	INDIRECT_REF of ADDR_EXPR.
+
 	PR c++/82360 - ICE with static_cast in template.
 	* call.c (perform_direct_initialization_if_possible): Check
 	processing_template_decl.

gcc/cp/cp-ubsan.c

@@ -205,7 +205,7 @@ cp_ubsan_check_member_access_r (tree *stmt_p, int *walk_subtrees, void *data)
       if (TREE_CODE (t) == ADDR_EXPR)
 	{
 	  *walk_subtrees = 0;
-	  t = TREE_OPERAND (stmt, 0);
+	  t = TREE_OPERAND (t, 0);
 	  cp_walk_tree (&t, cp_ubsan_check_member_access_r, data, ucmd->pset);
 	}
       break;