Werk #2856: winperf_phydisk: Not discovering on clusters where disk perfcounters are missing

Component Checks & agents
Title winperf_phydisk: Not discovering on clusters where disk perfcounters are missing
Date Dec 2, 2015
Checkmk Version 1.2.7i4 1.2.8b1
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Affected Editions
1.2.7i4 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)
1.2.8b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

This fixes a crash like this:

UnboundLocalError: local variable 'disk_read_bytes' referenced before assignment

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