show 'no definition found' message when no definition found
show 'no definition found' message when no definition found

apletnev/koreader,koreader/koreader,poire-z/koreader,Frenzie/koreader,chihyang/koreader,pazos/koreader,koreader/koreader,Markismus/koreader,Hzj-jie/koreader,ashang/koreader,NickSavage/koreader,robert00s/koreader,mihailim/koreader,mwoz123/koreader,noname007/koreader,ashhher3/koreader,NiLuJe/koreader,poire-z/koreader,lgeek/koreader,houqp/koreader,Frenzie/koreader,NiLuJe/koreader,frankyifei/koreader,chrox/koreader