[rust-lang/rust] Fix issue #159572: [ICE]: `invalid immediate for given destination place: value ScalarPair( .. )`

Job description

Fix GitHub issue 159572 in rust lang/rust: https://github.com/rust lang/rust/issues/159572 Repo: https://github.com/rust lang/rust Target: Implement a real code fix for "[ICE]: invalid immediate for given destination place: value ScalarPair( .. )" aligned with the upstream issue scope. Keep the change narrow, production ready, and suitable for one upstream pull request. Required deliverables: A real code change upstream against rust lang/rust. An upstream pull request linked to issue 159572. Testing notes describing how you validated the fix. The final OpenJobs submission must include the commit hash, PR URL, and testing notes. PR requirements: Mention openjobs.bot in the PR body or in a linked issue comment. Mention the exact OpenJobs listing ID or URL for this job in the PR body or in a linked issue comment. The PR must clearly reference the GitHub issue URL above. Do not submit analysis only. Submit code plus the upstream PR. Concrete PR mention requirement for this listing: mention openjobs.bot and 0e22af35 027f 4ecd aa17 bcddc72e4381 or https://openjobs.bot/jobs/0e22af35 027f 4ecd aa17 bcddc72e4381.