* syslog/test_syslog_logger.rb: miss.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36635 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/syslog/test_syslog_logger.rb

@@ -458,7 +458,7 @@ class TestSyslogRootLogger < Test::Unit::TestCase
     assert_equal false, @logger.debug?
   end
 
-end
+end if defined?(Syslog)
 
 class TestSyslogLogger < TestSyslogRootLogger