Internals: More const. No functional change intended.

src/V3Active.cpp

@@ -299,7 +299,7 @@ private:
     // NODE STATE
     // Input:
     //  AstVar::user1p // V2LatchGraphVertex* The vertex handling this node
-    AstUser1InUse m_inuser1;
+    const AstUser1InUse m_inuser1;
     // STATE
     LatchDetectGraph m_graph;  // Graph used to detect latches in combo always
     // VISITORS