[Kernel] Fixed issue with titles not booting due to lack of title id

src/xenia/gpu/graphics_system.cc

@@ -138,7 +138,7 @@ X_STATUS GraphicsSystem::Setup(cpu::Processor* processor,
             while (frame_limiter_worker_running_) {
               // If there is no title running then there is no need for guest
               // frame limiter thread.
-              if (!kernel_state_->title_id()) {
+              if (!kernel_state_->is_title_open()) {
                 xe::threading::Sleep(std::chrono::milliseconds(100));
                 continue;
               }

src/xenia/kernel/kernel_state.cc

@@ -120,6 +120,8 @@ uint32_t KernelState::title_id() const {
   return 0;
 }
 
+bool KernelState::is_title_open() const { return emulator_->is_title_open(); }
+
 const std::unique_ptr<xam::SpaInfo> KernelState::title_xdbf() const {
   return module_xdbf(executable_module_);
 }

src/xenia/kernel/kernel_state.h

@@ -175,6 +175,7 @@ class KernelState {
   vfs::VirtualFileSystem* file_system() const { return file_system_; }
 
   uint32_t title_id() const;
+  bool is_title_open() const;
   const std::unique_ptr<xam::SpaInfo> title_xdbf() const;
   const std::unique_ptr<xam::SpaInfo> module_xdbf(
       object_ref<UserModule> exec_module) const;