core: Make System's default constructor private

This makes it a compilation error to construct additional instances of
the System class directly, preventing accidental wasteful constructions
over and over.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/core/core.h b/src/core/core.h
index f90f085ad..c6f69f001 100644
--- a/src/core/core.h
+++ b/src/core/core.h
@@ -168,6 +168,8 @@ public:
     }
 
 private:
+    System();
+
     /// Returns the currently running CPU core
     Cpu& CurrentCpuCore();