merge revision(s) 57492: [Backport #12405]
test_queue.rb: fix portability * test/thread/test_queue.rb (test_queue_with_trap): fix portability. use SIGINT instead of SIGUSR2 which is supported on not all platforms.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@58164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 57492: [Backport #12405]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@58164 b2dd03c8-39d4-4d8f-98ff-823fe69b080e