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Werk #10045: Fix possible "variable referenced before assignment" during bulk discovery

Component Core & setup
Title Fix possible "variable referenced before assignment" during bulk discovery
Date Sep 17, 2019
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
2.0.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.6.0b11 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When an error occurs while communicating with a monitored system, the bulk discovery could fail with an error like "variable referenced before assignment" while handling the error situation.

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