Clarify last_sample_ok variable
Clarify last_sample_ok variable

git-svn-id: https://svn.apache.org/repos/asf/jakarta/jmeter/trunk@1064229 13f79535-47bb-0310-9956-ffa450edef68

Former-commit-id: 1381aa5ad164a1a9a719ce899f4b01e34467e93f
apache/jmeter,apache/jmeter,etnetera/jmeter,ham1/jmeter,apache/jmeter,etnetera/jmeter,benbenw/jmeter,etnetera/jmeter,benbenw/jmeter,etnetera/jmeter,ham1/jmeter,benbenw/jmeter,apache/jmeter,apache/jmeter,benbenw/jmeter,ham1/jmeter,ham1/jmeter,ham1/jmeter,etnetera/jmeter