Werk #2683: Fixed exceptions occuring in some ps checks

Component	Checks & agents
Title	Fixed exceptions occuring in some ps checks
Date	Oct 20, 2015
Level	Prominent Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i4 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.2.8b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

An exception like "'int' object is not iterable" could occur during execution of the ps checks.

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