test/test_syslog.rb (TestSyslog#test_log): In AIX, each output line of LOG_PERROR to stderr has an additional empty line appended, so skip that line.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47786 b2dd03c8-39d4-4d8f-98ff-823fe69b080e