Merge commit 'e191aaca44b986816695e3b7ecfae64697fd6631'

* commit 'e191aaca44b986816695e3b7ecfae64697fd6631':
  alsdec: limit avctx->bits_per_raw_sample to 32

See: 4c2b88678b436f59132386d9be2fc143e3ee480d
Merged-by: Michael Niedermayer <michaelni@gmx.at>