audio_audiohook_write_list() did not correctly update sample size after ast_translate.

audio_audiohook_write_list() did not take into account that the sample size may change after translation depending on if the original frame is is 8khz or 16khz.  the sample size is now updated after translating to reflect this possibility.  This caused the audio on the receiving end to sound terrible.  Thanks to jcolp and mmichelson for helping me work this out.

(issue AST-197)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@186379 65c4cc65-6c06-0410-ace0-fbb531ad65f3