Address code style comments

src/core/core.h

@@ -278,6 +278,7 @@ public: // HACK: this is temporary exposed for tests,
         // due to WIP kernel refactor causing desync state in memory
     std::unique_ptr<Kernel::KernelSystem> kernel;
     std::unique_ptr<Timing> timing;
+
     /// Memory system
     std::unique_ptr<Memory::MemorySystem> memory;