Werk #2647: Fix crash of CMC in case of duplicate host

Component Core & setup
Title Fix crash of CMC in case of duplicate host
Date Oct 5, 2015
Checkmk Edition Checkmk Raw (CRE)
Checkmk Version 1.2.7i3
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

In certain situtations when you have a non-valid configuration (e.g. a duplicate host) than the Check_MK Micro Core would not be able to start correctly due to a problem in the handling of errors in the RRD creation helper. This has been fixed.

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