the address of 'classname' will always evaluate as 'true'

code/game/ai_dmq3.c

@@ -4176,7 +4176,7 @@ int BotGetActivateGoal(bot_state_t *bs, int entitynum, bot_activategoal_t *activ
 		return 0;
 	}
 	trap_AAS_ValueForBSPEpairKey(ent, "classname", classname, sizeof(classname));
-	if (!classname) {
+	if (!*classname) {
 		BotAI_Print(PRT_ERROR, "BotGetActivateGoal: entity with model %s has no classname\n", model);
 		return 0;
 	}