Use `.unwrap()` and &byte for cleaner code.
Use `.unwrap()` and &byte for cleaner code.

(cherry picked from commit 0a91290d912d9193f707879bba5865e43b2094da)

bundai223/coreutils,ebfe/coreutils,steveklabnik/coreutils,silvio/rust-coreutils,dennis/coreutils,steveklabnik/coreutils,silvio/rust-coreutils,uutils/coreutils,retep998/coreutils,Gianbaoluo/coreutils,retep998/coreutils,dbrgn/coreutils,dbrgn/coreutils,Shtong/coreutils,kevgeniy/coreutils,hexsel/coreutils,kwantam/coreutils,beni55/coreutils,Shir0kamii/coreutils,mauricio/coreutils,wimh/coreutils,jbcrail/coreutils,bundai223/coreutils,kball/coreutils,keunwoo/coreutils,Arcterus/coreutils,tempbottle/coreutils,polapl/coreutils,filmor/coreutils,Heather/coreutils,Shir0kamii/coreutils,beni55/coreutils,dokaptur/coreutils,wimh/coreutils,kevgeniy/coreutils,jbcrail/coreutils,uutils/coreutils,uutils/coreutils,hexsel/coreutils,keunwoo/coreutils,efuquen/coreutils,samfoo/coreutils,sshling/coreutils,kwantam/coreutils,dennis/coreutils,sshling/coreutils,kball/coreutils,Shtong/coreutils,ebfe/coreutils,efuquen/coreutils,Gianbaoluo/coreutils,dbrgn/coreutils,Arcterus/coreutils,filmor/coreutils,polapl/coreutils,mauricio/coreutils,Heather/coreutils,tempbottle/coreutils,samfoo/coreutils