Werk #15152: Fix crash in mk-job.solaris

Component	Agent bakery
Title	Fix crash in mk-job.solaris
Date	Mar 1, 2023
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.2.0b1 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk Cloud (CCE), Checkmk MSP (CME) 2.1.0p23 Checkmk Raw (CRE), Checkmk Enterprise (CEE), Checkmk MSP (CME)

mk-job.solaris started crashing in version 2.1.p1 with an error: "exit: : numeric argument required".

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