jenkinsci/jenkins — pull request #1213 by oleg-nenashev (2014-04-26 13:31:11+00:00)
Title: Additional null checks for node access methods.

This PR does not address a specific issue. However, I sometimes see NPEs in jobs running on nodes being deleted by users / cloud managers, hence the complete checking of "null" nodes should be useful.

The PR includes:
* null checks for Computer::getNode(), SlaveComputer::getNode() and AbstractBuild::getCurrentNode()
* logging of slave log relocation issues