renderer&guest_gpu: minor cleanup

src/graphics/host_gpu/renderer/renderContext.cpp

@@ -26,7 +26,7 @@ RenderContext::~RenderContext() {
 void RenderContext::InitializeGpu(VideoOut::VideoOutDriver* video_out) {
 	EXIT_IF(m_gpu != nullptr);
 	m_video_out = video_out;
-	m_gpu       = std::make_unique<Gpu>(*this);
+	m_gpu       = std::make_unique<GuestGpu>(*this);
 	m_gpu_resources.SetGpu(m_gpu.get());
 }
 
@@ -45,7 +45,7 @@ void RenderContext::ShutdownGpu() {
 	}
 }
 
-Gpu& RenderContext::GetGpu() const {
+GuestGpu& RenderContext::GetGpu() const {
 	EXIT_IF(m_gpu == nullptr);
 	return *m_gpu;
 }