OPL: fix channel muting - PLEASE READ!

**SUBMODULES UPDATED** - Nuked-OPL3 is no longer a submodule as I
had to directly modify the core for this
if you mess up while removing Nuked-OPL3 from your repo, delete
everything and clone again

fixes #414

src/engine/platform/opl.cpp

@@ -564,6 +564,9 @@ int DivPlatformOPL::toFreq(int freq) {
 
 void DivPlatformOPL::muteChannel(int ch, bool mute) {
   isMuted[ch]=mute;
+  if (ch<melodicChans) {
+    fm.channel[outChanMap[ch]].muted=mute;
+  }
   int ops=(slots[3][ch]!=255 && chan[ch].state.ops==4 && oplType==3)?4:2;
   chan[ch].fourOp=(ops==4);
   update4OpMask=true;
@@ -1226,10 +1229,12 @@ void DivPlatformOPL::reset() {
   properDrums=properDrumsSys;
   if (oplType==3) {
     chanMap=properDrums?chanMapOPL3Drums:chanMapOPL3;
+    outChanMap=outChanMapOPL3;
     melodicChans=properDrums?15:18;
     totalChans=properDrums?20:18;
   } else {
     chanMap=properDrums?chanMapOPL2Drums:chanMapOPL2;
+    outChanMap=outChanMapOPL2;
     melodicChans=properDrums?6:9;
     totalChans=properDrums?11:9;
   }
@@ -1240,6 +1245,10 @@ void DivPlatformOPL::reset() {
     chan[i].vol=0x3f;
     chan[i].outVol=0x3f;
   }
+  
+  for (int i=0; i<melodicChans; i++) {
+    fm.channel[outChanMap[i]].muted=isMuted[i];
+  }
 
   for (int i=0; i<512; i++) {
     oldWrites[i]=-1;

src/engine/platform/opl.h

@@ -22,7 +22,7 @@
 #include "../dispatch.h"
 #include "../macroInt.h"
 #include <queue>
-#include "../../../extern/Nuked-OPL3/opl3.h"
+#include "../../../extern/opl/opl3.h"
 
 class DivPlatformOPL: public DivDispatch {
   protected: