fix page rect to screen rect transform when scale is larger than 1
fix page rect to screen rect transform when scale is larger than 1

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