Minor optimization in filter implementation.
Minor optimization in filter implementation.

jails/lithium,wbeater/lithium,qoqa/lithium,mehlah/lithium,graphis/lithium,datachand/lithium,UnionOfRAD/lithium,m4rcsch/lithium-core-library,UnionOfRAD/framework,SensCritique/lithium,pixelcog/lithium,mehlah/lithium,muyehub/lithium,datachand/lithium,jails/lithium,pixelcog/lithium,davidpersson/lithium,m4rcsch/li3_framework,davidpersson/lithium,whowgames/lithium,SensCritique/lithium,qoqa/lithium,wbeater/lithium,whowgames/lithium,graphis/lithium,muyehub/lithium,UnionOfRAD/lithium,m4rcsch/lithium-core-library