support idempotent POSIX_MQ#close
commitf14356733e83e5af35ec5c9f2346bf9607fc3a16
authorEric Wong <e@80x24.org>
Tue, 2 Feb 2016 22:14:16 +0000 (2 22:14 +0000)
committerEric Wong <e@80x24.org>
Tue, 2 Feb 2016 22:14:16 +0000 (2 22:14 +0000)
tree452c857c9e93b2172021e99f6a09dfd96e50f963
parent879bccec2058505f3d5c446595083649169b357c
support idempotent POSIX_MQ#close

IO#close under Ruby 2.3 is idempotent, we shall follow suit
with POSIX_MQ#close
ext/posix_mq/extconf.rb
ext/posix_mq/posix_mq.c
test/test_posix_mq.rb