Claude review: rust: inline some init methods

[Claude Code Review Bot <claude-review@example.com>]

Patch Review

**Status: Looks good**

Adds `#[inline]` to five methods across three files: `write_init` and `write_pin_init` on `Box<MaybeUninit<T>>` and `UniqueArc<MaybeUninit<T>>`, plus `pin_init` in the `InPlaceInit` trait.

The rationale is sound — these are generic methods that, when monomorphized with complex type parameters, produce excessively long mangled symbol names that exceed `modpost`/`objtool` limits. Using `#[inline]` (not `#[inline(always)]`) is the right choice: it hints the compiler without forcing inlining in every case. The cover letter notes that methods returning `impl PinInit` were deliberately excluded since they don't contribute to the long symbol name problem.

All five methods are small wrappers around unsafe blocks that delegate to `Init::__init` or `PinInit::__pinit`, making them good inlining candidates regardless of the symbol name motivation.

No concerns with this patch.

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Generated by Claude Code Patch Reviewer