Fix require order issue
Fix require order issue

Triggered when `byebug` used while pry-byebug installed.

k0kubun/byebug,scalp42/byebug,os97673/byebug,scalp42/byebug,guilherme/byebug,guilherme/byebug,icebreaker/byebug,miamiruby/byebug,ozydingo/byebug,deivid-rodriguez/byebug,davidmowrer/in_class_projects_t2,k0kubun/byebug,davidmowrer/in_class_projects_t2,deivid-rodriguez/byebug,saisai/byebug,miamiruby/byebug,ozydingo/byebug,saisai/byebug,guilherme/byebug,yui-knk/byebug,icebreaker/byebug,deivid-rodriguez/byebug,webdev1001/byebug,k0kubun/byebug,webdev1001/byebug,yui-knk/byebug,os97673/byebug,yui-knk/byebug,davidmowrer/in_class_projects_t2