Calculate true WAV block_align for PCM input. This fixes decoding on some malformed files which contain the wrong block_align value in the header.
Calculate true WAV block_align for PCM input. This fixes decoding on some malformed files which contain the wrong block_align value in the header.

git-svn-id: dea4c50957f75874cf9791776be29d2e34106c50@57 ef0d8562-5c19-0410-972e-841db63a069c

buserror/aften,buserror/aften,buserror/aften