Werk #3451: Fixed exception in host list when no local site configured

Component	Setup
Title	Fixed exception in host list when no local site configured
Date	May 2, 2016
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.4.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

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