Rename _t struct types in audio_coding.

_t names are reserved in POSIX.

R=henrik.lundin@webrtc.org
BUG=162

Review URL: https://webrtc-codereview.appspot.com/34509004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@7933 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/webrtc/modules/audio_coding/codecs/ilbc/decode.c b/webrtc/modules/audio_coding/codecs/ilbc/decode.c
index febd4ce..3a2e5a2 100644
--- a/webrtc/modules/audio_coding/codecs/ilbc/decode.c
+++ b/webrtc/modules/audio_coding/codecs/ilbc/decode.c
@@ -39,7 +39,7 @@
 void WebRtcIlbcfix_DecodeImpl(
     int16_t *decblock,    /* (o) decoded signal block */
     const uint16_t *bytes, /* (i) encoded signal bits */
-    iLBC_Dec_Inst_t *iLBCdec_inst, /* (i/o) the decoder state
+    IlbcDecoder *iLBCdec_inst, /* (i/o) the decoder state
                                            structure */
     int16_t mode      /* (i) 0: bad packet, PLC,
                                                                    1: normal */