Remove ValidationState's constructor

Author: jkczyz

src/consensus/validation.h

@@ -80,7 +80,7 @@ class ValidationState {
         MODE_VALID,   //!< everything ok
         MODE_INVALID, //!< network rule violation (DoS value may be set)
         MODE_ERROR,   //!< run-time error
-    } m_mode;
+    } m_mode{MODE_VALID};
     std::string m_reject_reason;
     std::string m_debug_message;
 protected:
@@ -95,7 +95,6 @@ class ValidationState {
     // ValidationState is abstract. Have a pure virtual destructor.
     virtual ~ValidationState() = 0;
 
-    ValidationState() : m_mode(MODE_VALID) {}
     bool Error(const std::string& reject_reason)
     {
         if (m_mode == MODE_VALID)