Minor refactoring, slight speedup of passing data in sound code.

src/common/SoundSDL2.cxx

@@ -261,11 +261,7 @@ void SoundSDL2::set(uInt16 addr, uInt8 value, Int32 cycle)
   // the sound to "scale" correctly, we have to know the games real frame
   // rate (e.g., 50 or 60) and the currently emulated frame rate. We use these
   // values to "scale" the time before the register change occurs.
-  RegWrite info;
-  info.addr = addr;
-  info.value = value;
-  info.delta = delta;
-  myRegWriteQueue.enqueue(info);
+  myRegWriteQueue.enqueue(addr, value, delta);
 
   // Update last cycle counter to the current cycle
   myLastRegisterSetCycle = cycle;
@@ -476,14 +472,17 @@ double SoundSDL2::RegWriteQueue::duration() const
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-void SoundSDL2::RegWriteQueue::enqueue(const RegWrite& info)
+void SoundSDL2::RegWriteQueue::enqueue(uInt16 addr, uInt8 value, double delta)
 {
   // If an attempt is made to enqueue more than the queue can hold then
   // we'll enlarge the queue's capacity.
   if(mySize == myCapacity)
     grow();
 
-  myBuffer[myTail] = info;
+  RegWrite& reg = myBuffer[myTail];
+  reg.addr  = addr;
+  reg.value = value;
+  reg.delta = delta;
   myTail = (myTail + 1) % myCapacity;
   ++mySize;
 }

src/common/SoundSDL2.hxx

@@ -174,6 +174,9 @@ class SoundSDL2 : public Sound
       uInt16 addr;
       uInt8 value;
       double delta;
+
+      RegWrite(uInt16 a = 0, uInt8 v = 0, double d = 0.0)
+        : addr(a), value(v), delta(d) { }
     };
 
     /**
@@ -209,7 +212,7 @@ class SoundSDL2 : public Sound
         /**
           Enqueue the specified object.
         */
-        void enqueue(const RegWrite& info);
+        void enqueue(uInt16 addr, uInt8 value, double delta);
 
         /**
           Return the item at the front on the queue.

src/debugger/DiStella.hxx

@@ -41,7 +41,7 @@ class DiStella
     // A list of options that can be applied to the disassembly
     // This will eventually grow to include all options supported by
     // standalone Distella
-    struct Settings{
+    struct Settings {
       Common::Base::Format gfx_format;
       bool resolve_code;    // Attempt to detect code vs. data sections
       bool show_addresses;  // Show PC addresses (always off for external output)

src/emucore/Settings.cxx

@@ -295,7 +295,7 @@ void Settings::validate()
 
 #ifdef SOUND_SUPPORT
   i = getInt("volume");
-  if(i < 0 || i > 100)    setInternal("volume", "100");
+  if(i < 0 || i > 100)  setInternal("volume", "100");
   i = getInt("freq");
   if(!(i == 11025 || i == 22050 || i == 31400 || i == 44100 || i == 48000))
     setInternal("freq", "31400");
@@ -622,9 +622,7 @@ int Settings::setInternal(const string& key, const Variant& value,
   }
   else
   {
-    Setting setting;
-    setting.key   = key;
-    setting.value = value;
+    Setting setting(key, value);
     if(useAsInitial) setting.initialValue = value;
 
     myInternalSettings.push_back(setting);
@@ -676,9 +674,7 @@ int Settings::setExternal(const string& key, const Variant& value,
   }
   else
   {
-    Setting setting;
-    setting.key   = key;
-    setting.value = value;
+    Setting setting(key, value);
     if(useAsInitial) setting.initialValue = value;
 
     myExternalSettings.push_back(setting);

src/emucore/Settings.hxx

@@ -115,6 +115,9 @@ class Settings
       string key;
       Variant value;
       Variant initialValue;
+
+      Setting(const string& k, const Variant& v, const Variant& i = EmptyVariant)
+        : key(k), value(v), initialValue(i) { }
     };
     using SettingsArray = vector<Setting>;