test/ruby/test_thread_queue.rb: add a wait to yield a thread
On Arch, sending a signal in a loop seems hardly to yield the execution.
1) Error: TestThreadQueue#test_queue_with_trap: Timeout::Error: execution of assert_in_out_err expired timeout (10 sec)
https://rubyci.org/logs/rubyci.s3.amazonaws.com/arch/ruby-master/log/20200209T120002Z.fail.html.gz
This change allows the test to pass.
Added by mame (Yusuke Endoh) almost 6 years ago
test/ruby/test_thread_queue.rb: add a wait to yield a thread
On Arch, sending a signal in a loop seems hardly to yield the execution.
https://rubyci.org/logs/rubyci.s3.amazonaws.com/arch/ruby-master/log/20200209T120002Z.fail.html.gz
This change allows the test to pass.