framework: fix implicit conversions
framework: fix implicit conversions

error: conversion to 'int' from 'chtype {aka long unsigned int}' may
alter its value [-Werror=conversion]
       int ch = mvinch(lineNo + highlight_direction_, x);
                ^

wanglei828/apollo,ApolloAuto/apollo,ycool/apollo,ApolloAuto/apollo,wanglei828/apollo,jinghaomiao/apollo,xiaoxq/apollo,ycool/apollo,xiaoxq/apollo,wanglei828/apollo,jinghaomiao/apollo,jinghaomiao/apollo,jinghaomiao/apollo,wanglei828/apollo,ycool/apollo,ApolloAuto/apollo,ycool/apollo,jinghaomiao/apollo,ApolloAuto/apollo,xiaoxq/apollo,ycool/apollo,ApolloAuto/apollo,wanglei828/apollo,jinghaomiao/apollo,ApolloAuto/apollo,xiaoxq/apollo,xiaoxq/apollo,ycool/apollo,wanglei828/apollo,xiaoxq/apollo