Internals: Cleanup some defaults. No functional change.

include/verilated_cov.h

@@ -157,8 +157,8 @@ protected:
     friend class VerilatedCovImp;
     // CONSTRUCTORS
     // Internal: Only made as part of VerilatedCovImp
-    VerilatedCovContext() {}
-    virtual ~VerilatedCovContext() {}
+    VerilatedCovContext() = default;
+    virtual ~VerilatedCovContext() = default;
 
     // METHODS
     // Internal: access to implementation class

src/V3Active.cpp

@@ -317,7 +317,7 @@ public:
         iterate(nodep);
         m_graph.latchCheck(nodep, kwd == VAlwaysKwd::ALWAYS_LATCH);
     }
-    virtual ~ActiveLatchCheckVisitor() {}
+    virtual ~ActiveLatchCheckVisitor() = default;
 };
 
 //######################################################################

test_regress/t/TestSimulator.h

@@ -40,7 +40,7 @@ public:
                    __LINE__, m_info.product);
         }
     }
-    ~TestSimulator() {}
+    ~TestSimulator() = default;
     // METHORS
 private:
     static TestSimulator& singleton() {

test_regress/t/t_extend_class_c.h

@@ -9,8 +9,8 @@
 class t_extend_class_c {
 public:
     // CONSTRUCTORS
-    t_extend_class_c() {}
-    ~t_extend_class_c() {}
+    t_extend_class_c() = default;
+    ~t_extend_class_c() = default;
     // METHODS
     // This function will be called from a instance created in Verilog
     inline uint32_t my_math(uint32_t in) { return in + 1; }