Thomas Guillem authored Jun 07, 2021 and Jean-Baptiste Kempf committed Jun 08, 2021

Quoting mpg123.de website:

"Fix misguided handling of part2_3_length checks in
III_get_scale_factors_1() and III_get_scale_factors_2() which
invalidated decoding of a mono source encoded as ms+i-stereo.
This was a regression introduced with version 1.25.7."

Fixes #25798