Socket.gethostname encoding still platform specific #6156
Description
OK - since Encoding.default_external => #<Encoding:Windows-1252>
jruby 9.2.11.1 (2.5.7) 2020-03-25 b1f55b1a40 OpenJDK 64-Bit Server VM 11+28 on 11+28 +jit [mswin32-x86_64]
irb(main):001:0> puts ''.encoding; require 'socket'; puts Socket.gethostname.encoding
Windows-1252
Windows-1252
=> nil
FAIL Encoding.default_external => #<Encoding:UTF-8>
bin\jruby -v -S irb -EUTF-8
jruby 9.2.11.1 (2.5.7) 2020-03-25 b1f55b1a40 OpenJDK 64-Bit Server VM 11+28 on 11+28 +jit [mswin32-x86_64]
irb(main):001:0> puts ''.encoding; require 'socket'; puts Socket.gethostname.encoding
UTF-8
Windows-1252
=> nil