message: Fix warning in OpenGLDriver in release builds
diff: @@ -1286,9 +1286,12 @@ void OpenGLDriver::createRenderTargetR(Handle<HwRenderTarget> rth,
  rt->gl.samples = samples;
  +#if !defined(NDEBUG)
  + // Only used by assert() checks below
  auto valueForLevel = [](size_t level, size_t value) {
  return std::max(size_t(1), value >> level);
  };
  +#endif
  if (targets & TargetBufferFlags::COLOR) {
  // TODO: handle multiple color attachments
  