Werk #16889: ewon: KeyError (device)

Component	Checks & agents
Title	ewon: KeyError (device)
Date	Aug 6, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p12 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p33 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

An existing rule for check_ewon without the mandatory key device would result in an exception KeyError (device). This change makes the check function use a default, if device is not set.

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