Title: Fix exception in case of missing agent sections of cluster-aware checks
Level: 1
Component: core
Class: fix
State: unknown
Version: 1.2.5i1
Date: 1388497781
Targetversion: future

If you configure (by mistake) an <tt>ps</tt> check on an SNMP device - which
obviously does not have that agent information - Check_MK would crash with
an exception. This has been fixed.
