mysqltest bug: reset --replace command after every

error message (because error messages use replacements)

client/mysqltest.cc

@@ -7916,6 +7916,7 @@ void handle_error(struct st_command *command,
 
   DBUG_ENTER("handle_error");
 
+  command->used_replace= 1;
   if (command->require_file)
   {
     /*

mysql-test/t/failed_auth_unixsocket.test

@@ -20,6 +20,7 @@ eval install plugin unix_socket soname '$AUTH_SOCKET_SO';
 --error ER_ACCESS_DENIED_NO_PASSWORD_ERROR
 connect (fail,localhost,$USER);
 
+--replace_result $USER USER
 --error ER_ACCESS_DENIED_NO_PASSWORD_ERROR
 change_user $USER;