Cleanup.

examples/common/entry/entry_osx.mm

@@ -727,6 +727,7 @@ namespace entry
 
 	bgfx::NativeWindowHandleType::Enum getNativeWindowHandleType(WindowHandle _handle)
 	{
+		BX_UNUSED(_handle);
 		return bgfx::NativeWindowHandleType::Default;
 	}