Apply clang-tidy modernize-use-equals-default check

src/ripple/json/impl/json_reader.cpp

@@ -72,11 +72,6 @@ codePointToUTF8 (unsigned int cp)
 // Class Reader
 // //////////////////////////////////////////////////////////////////
 
-Reader::Reader ()
-{
-}
-
-
 bool
 Reader::parse ( std::string const& document,
                 Value& root)

src/ripple/json/impl/json_value.cpp

@@ -30,16 +30,10 @@ const Int Value::minInt = Int ( ~ (UInt (-1) / 2) );
 const Int Value::maxInt = Int ( UInt (-1) / 2 );
 const UInt Value::maxUInt = UInt (-1);
 
-ValueAllocator::~ValueAllocator ()
-{
-}
-
 class DefaultValueAllocator : public ValueAllocator
 {
 public:
-    ~DefaultValueAllocator () override
-    {
-    }
+    virtual ~DefaultValueAllocator() = default;
 
     char* makeMemberName ( const char* memberName ) override
     {

src/ripple/json/impl/json_valueiterator.cpp

@@ -157,9 +157,6 @@ ValueIteratorBase::memberName () const
 // //////////////////////////////////////////////////////////////////
 // //////////////////////////////////////////////////////////////////
 
-ValueConstIterator::ValueConstIterator ()
-{
-}
 
 ValueConstIterator::ValueConstIterator ( const Value::ObjectValues::iterator& current )
     : ValueIteratorBase ( current )
@@ -182,10 +179,6 @@ ValueConstIterator::operator = ( const ValueIteratorBase& other )
 // //////////////////////////////////////////////////////////////////
 // //////////////////////////////////////////////////////////////////
 
-ValueIterator::ValueIterator ()
-{
-}
-
 
 ValueIterator::ValueIterator ( const Value::ObjectValues::iterator& current )
     : ValueIteratorBase ( current )

src/ripple/json/impl/json_writer.cpp

@@ -181,9 +181,6 @@ std::string valueToQuotedString ( const char* value )
 // Class FastWriter
 // //////////////////////////////////////////////////////////////////
 
-FastWriter::FastWriter ()
-{
-}
 
 std::string
 FastWriter::write ( const Value& root )