Fix typo in list_device_view::pair_rep_end()

[mythrocks]

#7349 introduced rep-iterators for list_device_view. In implementation for list_device_view::pair_rep_end() has a typo, and is incorrect.

The change in this PR should fix the problem, and exercise the corrected implementation from lists::contains().

[mythrocks]

The error is regretted. I noticed the problem a moment before #7349 was merged. (I was going over it one last time before commit.)

[codecov]

Codecov Report

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@@              Coverage Diff               @@
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  Hits                   ?    13658           
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[harrism]

Is there no test that exercises this path?

[mythrocks]

All the contains tests are to exercise this path. It was circumvented by an oversight of mine in #7349.

[mythrocks]

@gpucibot merge

[mythrocks]

Thanks for the reviews, @vuule, @trxcllnt!