DSOAL r497 - Avoid duplicate checks

DSOAL r497@72903fb7 c++-rewrite - Avoid duplicate checks [2023-04-18 06:52:45 +0000]
OpenAL Soft r8515@d9fed51a master - Make sure extension functions are properly aligned on 32-bit [2023-04-13 06:39:57 +0000]
Build log: https://github.com/ThreeDeeJay/dsoal/actions/runs/10752448542/job/29820787429

Full Changelog: r493...r497