https://issues.apache.org/bugzilla/show_bug.cgi?id=55610
Fix slow display issue due to XML formatting when content is not XML.  
Formatting is anyway not a good idea.
Bugzilla Id: 55610

git-svn-id: https://svn.apache.org/repos/asf/jmeter/trunk@1544809 13f79535-47bb-0310-9956-ffa450edef68