Avoid compiler warnings about unreferenced parameters

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

src/MMBitmap.c

@@ -36,6 +36,7 @@ void destroyMMBitmap(MMBitmapRef bitmap)
 
 void destroyMMBitmapBuffer(char * bitmapBuffer, void * hint)
 {
+	(void)hint;
 	if (bitmapBuffer != NULL)	
 	{
 		free(bitmapBuffer);

src/buffer_finalizer.h

@@ -4,6 +4,7 @@ class BufferFinalizer
 public:
 	void operator()(Napi::Env env, T *data)
 	{
+		(void)env;
 		if (data != nullptr)
 		{
 			delete data;

src/win32/mouse.c

@@ -31,6 +31,7 @@ void moveMouse(MMPoint point)
 
 void dragMouse(MMPoint point, const MMMouseButton button)
 {
+	(void)button;
 	moveMouse(point);
 }