[ruby/irb] Fix test warnings (https://github.com/ruby/irb/pull/698)
Encoding should be saved before creating Irb objects
Fix unused local warning
https://github.com/ruby/irb/commit/036ec31034
[ruby/irb] Fix test warnings (https://github.com/ruby/irb/pull/698)
Encoding should be saved before creating Irb objects
Fix unused local warning
https://github.com/ruby/irb/commit/036ec31034