Fix reset of encoding after US_ASCII test
Fix reset of encoding after US_ASCII test

The test originally attempted to reset the encoding after each example

however due to the way let() works, orig_encoding was only set at the

time we wish to use it's value.



Due to this flaw the after(:each) call set the encoding to US_ASCII

again.
ilansh/rubocop,bbatsov/rubocop,akihiro17/rubocop,akihiro17/rubocop,vergenzt/rubocop,tejasbubane/rubocop,haziqhafizuddin/rubocop,dreyks/rubocop,bbatsov/rubocop,jmks/rubocop,rtlechow/rubocop,alexdowad/rubocop,smakagon/rubocop,NobodysNightmare/rubocop,rrosenblum/rubocop,backus/rubocop,bankair/rubocop,jmks/rubocop,legendetm/rubocop,tdeo/rubocop,bankair/rubocop,meganemura/rubocop,bquorning/rubocop,jfelchner/rubocop,sue445/rubocop,maxjacobson/rubocop,tejasbubane/rubocop,NobodysNightmare/rubocop,petehamilton/rubocop,sue445/rubocop,scottmatthewman/rubocop,panthomakos/rubocop,meganemura/rubocop,alexcstark/rubocop,mikegee/rubocop,b-t-g/rubocop,petehamilton/rubocop,rtlechow/rubocop,sue445/rubocop,hanumakanthvvn/rubocop,melch/rubocop,deivid-rodriguez/rubocop,pocke/rubocop,pocke/rubocop,palkan/rubocop,jfelchner/rubocop,hanumakanthvvn/rubocop,lumeet/rubocop,lucasuyezu/rubocop,savef/rubocop,panthomakos/rubocop,rrosenblum/rubocop,urbanautomaton/rubocop,smakagon/rubocop,akihiro17/rubocop,tejasbubane/rubocop,sinsoku/rubocop,bquorning/rubocop,palkan/rubocop,legendetm/rubocop,mikegee/rubocop,petehamilton/rubocop,deivid-rodriguez/rubocop,bquorning/rubocop,iGEL/rubocop,palkan/rubocop,vergenzt/rubocop,lucasuyezu/rubocop,backus/rubocop,Drenmi/rubocop,alexdowad/rubocop,b-t-g/rubocop,Drenmi/rubocop,iGEL/rubocop,panthomakos/rubocop,meganemura/rubocop,melch/rubocop,scottmatthewman/rubocop,sinsoku/rubocop,savef/rubocop,mclark/rubocop,vergenzt/rubocop,lumeet/rubocop,jmks/rubocop,deivid-rodriguez/rubocop,mclark/rubocop,haziqhafizuddin/rubocop,alexcstark/rubocop,tdeo/rubocop,mikegee/rubocop,urbanautomaton/rubocop,rrosenblum/rubocop,dreyks/rubocop,tdeo/rubocop,maxjacobson/rubocop,maxjacobson/rubocop,ilansh/rubocop,jfelchner/rubocop