Import an stb_vorbis fix from upstream PR/1563:

[sezero]

Patch by Seb de Graffenried (@Seb-degraff): nothings/stb#1563
Fixes distorted decompressed audio when UBSan was enabled.

[codecov]

Codecov Report

Merging #703 (5f221ea) into master (cc62388) will increase coverage by 0%.
Report is 22 commits behind head on master.
The diff coverage is 93%.

❗ Current head 5f221ea differs from pull request most recent head e08e77b. Consider uploading reports for the commit e08e77b to get more accurate results

Additional details and impacted files

@@          Coverage Diff           @@
##           master    #703   +/-   ##
======================================
  Coverage      82%     82%           
======================================
  Files         171     171           
  Lines       31229   31271   +42     
======================================
+ Hits        25751   25793   +42     
  Misses       5478    5478           

Files	Coverage Δ
src/common.h	100% <ø> (ø)
src/depackers/mmcmp.c	74% <100%> (ø)
src/loaders/amf_load.c	70% <100%> (+4%)	⬆️
src/loaders/iff.c	87% <100%> (ø)
src/loaders/stm_load.c	85% <100%> (+<1%)	⬆️
src/loaders/vorbis.c	72% <100%> (ø)
src/loaders/xm_load.c	85% <100%> (ø)
src/player.c	93% <100%> (-<1%)	⬇️
src/scan.c	97% <100%> (+<1%)	⬆️
src/loaders/imf_load.c	76% <86%> (-<1%)	⬇️
... and 3 more

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