posix-mq-rb: use IO#binmode to get binary IOs

Avoids warnings this way

1 files changed, 4 insertions, 2 deletions

diff --git a/bin/posix-mq-rb b/bin/posix-mq-rb
index aab0b61..288b4e3 100755
--- a/bin/posix-mq-rb
+++ b/bin/posix-mq-rb
@@ -1,7 +1,9 @@
 #!/usr/bin/env ruby
 # -*- encoding: binary -*-
-Encoding.default_external = Encoding::BINARY if defined?(Encoding)
 $stderr.sync = $stdout.sync = true
+$stdout.binmode
+$stderr.binmode
+$stdin.binmode
 
 require 'posix_mq'
 require 'optparse'
@@ -70,7 +72,7 @@ ARGV.options do |x|
       }
     end
   end
-  x.on('-q', "quiet warnings and errors") { $stderr.reopen("/dev/null", "w") }
+  x.on('-q', "quiet warnings and errors") { $stderr.reopen("/dev/null", "wb") }
   x.on('-h', '--help', 'Show this help message.') { puts x; exit }
   x.parse!
 end