Codecs: Fix stuck buffer when advance_buffer fails

Fixes FS#9186 (constant noise at the end of truncated flac file)

Change-Id: I516282e48cecb2be009b5779115395a50edb6fdc

apps/codec_thread.c

@@ -269,6 +269,7 @@ static bool codec_advance_buffer_counters(size_t amount)
 {
     if (bufadvance(ci.audio_hid, amount) < 0)
     {
+        bufseek(ci.audio_hid, ci.filesize);
         ci.curpos = ci.filesize;
         return false;
     }