Fix tests for Ruby 1.9.
Fix tests for Ruby 1.9.
davidchua/gelf-rb,aia/syslog-sd-rb,adrianlyjak/gelf-rb,MBXSystems/gelf-rb,Home24/gelf-rb,siawyoung/gelf-rb,edefaria/gelf-rb,Graylog2/gelf-rb,restorando/gelf-rb