Werk #8401: Fixed segfault for 'servicesbyhostgroup' query.

Component	The Checkmk Micro Core
Title	Fixed segfault for 'servicesbyhostgroup' query.
Date	Jan 14, 2016
Level	Prominent Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i4 Checkmk Enterprise (CEE), Checkmk MSP (CME)

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