Werk #6769: genua_fan genua_pfstate: Fixed crashing discovery on empty data

Component	Checks & agents
Title	genua_fan genua_pfstate: Fixed crashing discovery on empty data
Date	Sep 27, 2018
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.6.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 1.5.0p5 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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