core quality, part 2

- Bubble System WSG
- C64 (dSID)
- Game Boy
- DS
- PowerNoise

src/engine/platform/pce.cpp

@@ -94,8 +94,8 @@ void DivPlatformPCE::acquire(short** buf, size_t len) {
       regPool[w.addr&0x0f]=w.val;
       writes.pop();
     }
-    memset(tempL,0,24*sizeof(int));
-    memset(tempR,0,24*sizeof(int));
+    tempL[0]=0;
+    tempR[0]=0;
     pce->Update(coreQuality);
     pce->ResetTS(0);