Free dataset after INIT_CONNECT

lib/MySQL_Session.cpp

@@ -1422,6 +1422,7 @@ bool MySQL_Session::handler_again___status_SETTING_INIT_CONNECT(int *_rc) {
 	int rc=myconn->async_send_simple_command(myds->revents,myconn->options.init_connect,strlen(myconn->options.init_connect));
 	if (rc==0) {
 		myds->revents|=POLLOUT;	// we also set again POLLOUT to send a query immediately!
+		myds->free_mysql_real_query();
 		st=previous_status.top();
 		previous_status.pop();
 		NEXT_IMMEDIATE_NEW(st);