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Properly init speech/music confidence values

This was sometimes causing the music probability to be stuck at
zero at the beginning of files

--- a/src/analysis.c

+++ b/src/analysis.c

@@ -224,6 +224,8 @@

   /* Clear non-reusable fields. */

   char *start = (char*)&tonal->TONALITY_ANALYSIS_RESET_START;

   OPUS_CLEAR(start, sizeof(TonalityAnalysisState) - (start - (char*)tonal));

+  tonal->music_confidence = .9f;

+  tonal->speech_confidence = .1f;

 }

 void tonality_get_info(TonalityAnalysisState *tonal, AnalysisInfo *info_out, int len)

@@ -869,11 +871,6 @@

              tonal->speech_confidence_count = IMIN(tonal->speech_confidence_count, 500);

              tonal->speech_confidence += adapt*MIN16(.2f,frame_probs[0]-tonal->speech_confidence);

           }

-       } else {

-          if (tonal->music_confidence_count==0)

-             tonal->music_confidence = .9f;

-          if (tonal->speech_confidence_count==0)

-             tonal->speech_confidence = .1f;

        }

     }

     tonal->last_music = tonal->music_prob>.5f;