From cups-2.4b1, lpoptions fails to read the options "number-up" & "job-sheets"

[tangyanli]

This issue is found on Fedora36 with cups-2.4.1
I investigated a bit, this issue happens from cups-2.4b1 after fixing #71.

Reproduce step
(1) Call lpoptions to set the options "number-up" and "job-sheets"
$lpoptions -p PrinterName -o number-up=4 -o job-sheets=classified,classified
(2) Call lpoptions to display the options
$lpoptions -p PrinterName

Check the displayed options, the value of "number-up" is "1"; the value of "job-sheets" is "none,none"

[michaelrsweet]

Replicated the issue, investigating...

[michaelrsweet]

[master d2f8d47] Fix lpoptions regression (Issue #370)

[tangyanli]

Tested, the issue is fixed.
Thanks.