Werk #8544: Fixed broken "default grahs" having negative values

Component Metrics system
Title Fixed broken "default grahs" having negative values
Date Aug 3, 2016
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed
Checkmk versions & editions
1.4.0i1 Checkmk Enterprise (CEE), Checkmk MSP (CME)

Graph values which have no value specification and thus are rendered with the default rendering method without unit etc. lead to broken graphs when the values were negative. This fixes a regression introduced with 1.2.8p6.

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