Properly format "-e" in backtraces
Properly format "-e" in backtraces

Backtrace::Location#absolute_path returns nil instead of "-e". In any case
both methods seem to return fullpaths so this fix should work.

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