merge revision(s) 62099: [Backport #14416]
net/pop: make modified strings mutable Thanks to Michael Zimmerman for the bug report * lib/net/pop.rb: make modified strings mutable [ruby-core:85210] [Bug #14416] * test/net/pop/test_pop.rb: new test
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@64443 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 62099: [Backport #14416]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_5@64443 b2dd03c8-39d4-4d8f-98ff-823fe69b080e