Check_MK Werk 6844: mknotifyd: Fixed parse exception when failed to open listen socket

ID: 6844 Title: mknotifyd: Fixed parse exception when failed to open listen socket Component: Checks & agents Level: 1 Class: Bug fix Version: 1.6.0i1 When a mknotifyd instance fails to open it's listen socket the parse function of the check was unable to process the agent output of the mknotifyd. This resulted in a crash, e.g. during service discovery.