Cherry-pick #11910 to 7.0: [Heartbeat] Fix NPE on monitor configuration errors #11921
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These errors cause the `newMonitor` constructor to return a nil object plus error. Without a nil check we get an NPE. Fixes elastic#11747 (cherry picked from commit ac37fa3)
ruflin
approved these changes
Apr 25, 2019
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Cherry-pick of PR #11910 to 7.0 branch. Original message:
These errors cause the
newMonitorconstructor to return a nil object plus error. Without a nil check we get an NPE.Fixes #11747