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avoid out of boundaries write in yinfft
avoid out of boundaries write in yinfft

--- a/src/pitchyinfft.c

+++ b/src/pitchyinfft.c

@@ -101,9 +101,11 @@

   aubio_mfft_do(p->fft,p->winput,p->fftout);

   for (l=0; l < p->fftout->length; l++){

 	  p->sqrmag->data[0][l] = SQR(p->fftout->norm[0][l]);

-	  p->sqrmag->data[0][(p->fftout->length-1)*2-l] = 

-	  	SQR(p->fftout->norm[0][l]);

 	  p->sqrmag->data[0][l] *= p->weight->data[0][l]; 

+  }

+  for (l=1; l < p->fftout->length; l++){

+	  p->sqrmag->data[0][(p->fftout->length-1)*2-l] = 

+	   SQR(p->fftout->norm[0][l]);

 	  p->sqrmag->data[0][(p->fftout->length-1)*2-l] *=

 		 p->weight->data[0][l];

   }