[Bug 1974109] [NEW] [UBUNTU 22.04] zipl segfaults when "parameters=" is missing

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ZIPL segfaults if a section doesn't contain a "parameter=" line.
Adding that line makes the problem go away.
 
This is especially a problem when secure execution is set up since the parameter is provided in the secure image and hence a zipl parameter is not needed.

---uname output---
Linux linux6 5.15.0-27-generic #28-Ubuntu SMP Thu Apr 14 04:55:23 UTC 2022 s390x s390x s390x GNU/Linux
 
Machine Type = z16 
 
---Steps to Reproduce---
Add a section to /etc/zipl.conf that doesn't have a parameter line.
 
Userspace tool common name: zipl 
 
The userspace tool has the following bit modes: 64-bit

** Affects: s390-tools (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bugnameltc-198062 severity-medium targetmilestone-inin---
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[UBUNTU 22.04] zipl segfaults when "parameters=" is missing
https://bugs.launchpad.net/bugs/1974109
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