Noting merge of JENKINS-28115

changelog.html

@@ -55,7 +55,9 @@ Upcoming changes</a>
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+    Under rare conditions Executor.getProgress() can throw a Division by zero exception.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-28115">issue 28115</a>)
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 <h3><a name=v1.611>What's new in 1.611</a> (2015/04/26)</h3>