add: if(CON_SQLURL(_h)) { aug_free(CON_SQLURL(_h)); CON_SQLURL(_h) = (char *) 0; }
context: void db_close(db_con_t* _h){	DLOG("db_close", "entry");	if(! _h)	{		PLOG("db_close", "no handle passed, ignored");		return;	}	disconnect_db(_h);	aug_free(_h);}