Fix significant audio glitches when voicing/unvoicing.

Removed the code that enabled/disabled pitch shifting, as
this resulted in discontinuities.  Instead the pitch shifter is
run with the parameters from the last voiced pitch.

pitch_shifter.h

@@ -24,8 +24,6 @@
 
   float* cbo; // circular output buffer
   unsigned long cbord;  //read index for circular buffer;
-
-  int active;
 } PitchShifter;
 
 

talentedhack.c

@@ -320,17 +320,13 @@ static void runTalentedHack(LV2_Handle instance, uint32_t sample_count)
 				float outpperiod=semitones_to_pperiod(&psTalentedHack->quantizer, outpitch);
 				// Compute variables for pitch shifter that depend on pitch
 				ComputePitchShifterVariables(&psTalentedHack->pshifter, pperiod,outpperiod,fs);
-				psTalentedHack->pshifter.active=1;
 			} else { 
 				UnVoiceMidi(&psTalentedHack->quantizer,lSampleIndex);
 				ResetPitchSmoother(&psTalentedHack->psmoother);
-				psTalentedHack->pshifter.active=0;
 			}
 		}
+		in=ShiftPitch(&psTalentedHack->pshifter,&psTalentedHack->buffer, N);
 
-		if(psTalentedHack->pshifter.active) {
-			in=ShiftPitch(&psTalentedHack->pshifter,&psTalentedHack->buffer, N);
-		}
 		unsigned int twoahead = (psTalentedHack->buffer.cbiwr + 2)%N;
 		if (*psTalentedHack->fcorrector.p_Fcorr>=1) {
 			in=AddFormants(&psTalentedHack->fcorrector,in,twoahead);