[vulkan] Fix typos

src/xenia/ui/vulkan/vulkan_context.cc

@@ -52,7 +52,6 @@ VulkanContext::~VulkanContext() {
 
 bool VulkanContext::Initialize() {
   auto provider = static_cast<VulkanProvider*>(provider_);
-  auto device = provider->device();
 
   if (target_window_) {
     // Create swap chain used to present to the window.

src/xenia/ui/vulkan/vulkan_instance.cc

@@ -336,7 +336,7 @@ bool VulkanInstance::CreateInstance() {
       return false;
   }
 
-  // Load Vulkan entrypoints and extensions.
+  // Load Vulkan entry points and extensions.
   volkLoadInstance(handle);
 
   // Enable debug validation, if needed.

src/xenia/ui/window_demo.cc

@@ -70,7 +70,7 @@ int window_demo_main(const std::vector<std::string>& args) {
   std::unique_ptr<GraphicsProvider> graphics_provider;
   loop->PostSynchronous([&window, &graphics_provider]() {
     // Create graphics provider and an initial context for the window.
-    // The window will finish initialization wtih the context (loading
+    // The window will finish initialization with the context (loading
     // resources, etc).
     graphics_provider = CreateDemoGraphicsProvider(window.get());
     window->set_context(graphics_provider->CreateContext(window.get()));