uninitialized variables? oh my!

src/engine/platform/nes.cpp

@@ -145,7 +145,9 @@ void DivPlatformNES::tick() {
         if ((chan[i].prevFreq>>8)!=(chan[i].freq>>8) || i==2) {
           apu_wr_reg(0x4003+i*4,0xf8|(chan[i].freq>>8));
         }
-        chan[i].prevFreq=chan[i].freq;
+        if (chan[i].freq!=65535 && chan[i].freq!=0) {
+          chan[i].prevFreq=chan[i].freq;
+        }
       }
       if (chan[i].keyOn) chan[i].keyOn=false;
       if (chan[i].keyOff) chan[i].keyOff=false;

src/engine/platform/nes.h

@@ -28,6 +28,7 @@ class DivPlatformNES: public DivDispatch {
       keyOff(false),
       inPorta(false),
       vol(15),
+      outVol(15),
       wave(-1) {}
   };
   Channel chan[5];

src/engine/platform/sms.h

@@ -23,7 +23,8 @@ class DivPlatformSMS: public DivDispatch {
       freqChanged(false),
       keyOn(false),
       keyOff(false),
-      vol(15) {}
+      vol(15),
+      outVol(15) {}
   };
   Channel chan[4];
   unsigned char snNoiseMode;