compile.c: remove more unreachable chunk
* compile.c (remove_unreachable_chunk): remove beyond labels to be
removed.
compile.c: fix stack consistency error
* compile.c (iseq_peephole_optimize): fix stack consistency error
from return in loop, by adding extra `pop` when replacing `jump`
with `leave`, which is never reached but needed to adjust sp
calculation. [ruby-core:84589] [Bug #14273]
merge revision(s) 61617,61618: [Backport #14273]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@62426 b2dd03c8-39d4-4d8f-98ff-823fe69b080e