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src/pitch/pitchfcomb.c: return NULL if fft creation failed

--- a/src/pitch/pitchfcomb.c

+++ b/src/pitch/pitchfcomb.c

@@ -53,12 +53,17 @@

   aubio_pitchfcomb_t *p = AUBIO_NEW (aubio_pitchfcomb_t);

   p->fftSize = bufsize;

   p->stepSize = hopsize;

+  p->fft = new_aubio_fft (bufsize);

+  if (!p->fft) goto beach;

   p->winput = new_fvec (bufsize);

   p->fftOut = new_cvec (bufsize);

   p->fftLastPhase = new_fvec (bufsize);

-  p->fft = new_aubio_fft (bufsize);

   p->win = new_aubio_window ("hanning", bufsize);

   return p;

+

+beach:

+  AUBIO_FREE(p);

+  return NULL;

 }

 /* input must be stepsize long */