perf(allocator): reduce operations while Mutex lock is held in AllocatorPool

[overlookmotel]

Tiny optimization to AllocatorPool. unwrap_or_else doesn't require the mutex lock, so drop the lock before calling it.

[overlookmotel]

• perf(allocator): reduce operations while Mutex lock is held in AllocatorPool #11761 👈 (View in Graphite)
• perf(allocator): remove Arc from AllocatorPool #11760
• refactor(allocator): re-order code #11759
• main

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #11761 will improve performances by 15.05%

_{Comparing 06-16-perf_allocator_reduce_operations_while_mutex_lock_is_held (2641030) with main (371473c)}

Summary

⚡ 1 improvements
✅ 37 untouched benchmarks

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	mangler[cal.com.tsx]	3.5 ms	3.1 ms	+15.05%

[overlookmotel]

Merge activity

• Jun 17, 1:06 AM UTC: The merge label '0-merge' was detected. This PR will be added to the Graphite merge queue once it meets the requirements.
• Jun 17, 1:32 AM UTC: overlookmotel added this pull request to the Graphite merge queue.
• Jun 17, 1:40 AM UTC: Merged by the Graphite merge queue.