Werk #16765: agent_netapp_ontap: fix crash in call without arguments

Component	Checks & agents
Title	agent_netapp_ontap: fix crash in call without arguments
Date	May 14, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p4 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p27 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

The agent was crashing when called manually from the command line without any arguments. Now the agent fails gracefully in such case.

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