Werk #2743: Fixed handling of column types in "GET columns"

Component	Livestatus
Title	Fixed handling of column types in "GET columns"
Date	Nov 4, 2015
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.7i4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

Under rare circumstances the core could crash during the processing of a columns query.

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