fix(audio): bounds-check fontId to stop OOB crash with large SAF packs (#6916)

AudioLoad_IsFontLoadComplete had a stub `return true` that bypassed all
load-status checks, masking an out-of-bounds write: for large SAF packs
(many custom sequences) SetFontLoadStatus indexed fontLoadStatus[] with
fontId values larger than the fontMapSize-sized array, causing heap
corruption and semi-random crashes.

Remove the stub. Add a (size_t)fontId >= fontMapSize guard in both the
check and the setter: out-of-range IDs (custom SAF sequences that carry
no associated soundfont) are treated as "loaded" in the check and
silently skipped in the write, matching prior observable behavior while
eliminating the OOB access.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions