Werk #4996: Backup targets: Fixed possible MemoryError exception when editing a target

Component	Setup
Title	Backup targets: Fixed possible MemoryError exception when editing a target
Date	Jul 14, 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) 1.4.0p9 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

When saving a backup target a MemoryException() could occur while checking whether or not the target is writable for the current user.

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