Werk #1730: apc_symmetra: Fixed exception when last diagnose date was not known

Component	Checks & agents
Title	apc_symmetra: Fixed exception when last diagnose date was not known
Date	Dec 9, 2014
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.2.6b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

To the list of all Werks