fix bug where zero length filter-lists would blow up if you pressed up or down
fix bug where zero length filter-lists would blow up if you pressed up or down

Signed-off-by: Chris Granger <5654cde260ae99bc4d30054171b8bcd902efd19a@gmail.com>

rundis/LightTable,justintaft/LightTable,windyuuy/LightTable,craftybones/LightTable,LightTable/LightTable,hiredgunhouse/LightTable,kolya-ay/LightTable,rundis/LightTable,ashneo76/LightTable,ohAitch/LightTable,youprofit/LightTable,kenny-evitt/LightTable,windyuuy/LightTable,ashneo76/LightTable,fdserr/LightTable,masptj/LightTable,bruno-oliveira/LightTable,Bost/LightTable,hiredgunhouse/LightTable,ohAitch/LightTable,youprofit/LightTable,ohAitch/LightTable,mrwizard82d1/LightTable,nagyistoce/LightTable,kausdev/LightTable,BenjaminVanRyseghem/LightTable,fdserr/LightTable,rundis/LightTable,youprofit/LightTable,hiredgunhouse/LightTable,pkdevbox/LightTable,windyuuy/LightTable,mrwizard82d1/LightTable,sbauer322/LightTable,sbauer322/LightTable,bruno-oliveira/LightTable,Bost/LightTable,sbauer322/LightTable,bruno-oliveira/LightTable,pkdevbox/LightTable,justintaft/LightTable,mpdatx/LightTable,cldwalker/LightTable,craftybones/LightTable,mpdatx/LightTable,0x90sled/LightTable,BenjaminVanRyseghem/LightTable,brabadu/LightTable,fdserr/LightTable,LightTable/LightTable,kenny-evitt/LightTable,craftybones/LightTable,cldwalker/LightTable,nagyistoce/LightTable,kolya-ay/LightTable,ashneo76/LightTable,mrwizard82d1/LightTable,pkdevbox/LightTable,mpdatx/LightTable,0x90sled/LightTable,masptj/LightTable,EasonYi/LightTable,LightTable/LightTable,nagyistoce/LightTable,0x90sled/LightTable,masptj/LightTable,Bost/LightTable,kausdev/LightTable,brabadu/LightTable,brabadu/LightTable,EasonYi/LightTable,kolya-ay/LightTable,kausdev/LightTable,kenny-evitt/LightTable,EasonYi/LightTable,BenjaminVanRyseghem/LightTable