Werk #4610: Fixed error in graph displaying views with invalid perfdata strings

Component	User interface
Title	Fixed error in graph displaying views with invalid perfdata strings
Date	May 5, 2017
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	1.5.0i1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.4.0b7 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME) 1.2.8p22 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When a service had a performance data string set which was only containing spaces or a single space this lead to an exception in the GUI.

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