Werk #17527: mkbackup: Prevent TypeError exception for failed backups in check

Component	Checks & agents
Title	mkbackup: Prevent TypeError exception for failed backups in check
Date	Feb 5, 2025
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.5.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0p27 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT

Previously, the mkbackup check raised a TypeError exception when the backup size was null. This was the case for failed backups.

This has been fixed.

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