[perl #126494] [BUG] `for lines()` hangs when $*ARGFILES consists of 2 or more files

[Christian Bartolomaeus via RT]

There was already a (passing) test for this in S16-filehandles/argfiles.t 
(added with commit a4721fe09d).

I verified that said test hangs with rakudo on commit a4721fe09d. I'm closing 
this ticket as 'resolved'.