fixed fish_sound_new bug where fsound->codec was not initialized NULL
fixed fish_sound_new bug where fsound->codec was not initialized NULL

bug report from Zen:
  fsound->codec is not set to NULL. If you create a fishsound object then
  delete it before using it, you get a seg fault in fish_sound_delete when
  you try to delete the fishsound data structure.


git-svn-id: cffa15b480e6f0d86abcf9d30fc65d52a4d7b9f9@198 8158c8cd-e7e1-0310-9fa4-c5954c97daef

kfish/libfishsound,kfish/libfishsound