[readline] fix some highlighting issues for search/sql
[readline] fix some highlighting issues for search/sql


tstack/lnav,sureshsundriyal/lnav,acleasby/lnav,acleasby/lnav,acleasby/lnav,sureshsundriyal/lnav,tstack/lnav,acleasby/lnav,sureshsundriyal/lnav,sureshsundriyal/lnav,tstack/lnav,tstack/lnav,acleasby/lnav