Added error codes to SyntaxTest expectations (changed code)

test/libsolidity/SMTCheckerJSONTest.cpp

@@ -127,6 +127,7 @@ TestCase::TestResult SMTCheckerJSONTest::run(ostream& _stream, string const& _li
 				end -= preamble.size();
 			m_errorList.emplace_back(SyntaxTestError{
 				error["type"].asString(),
+				error["errorId"].isNull() ?  nullopt : optional<langutil::ErrorId>(langutil::ErrorId{error["errorId"].asUInt()}),
 				error["message"].asString(),
 				sourceName,
 				static_cast<int>(start),

test/libsolidity/SyntaxTest.cpp

@@ -79,6 +79,7 @@ void SyntaxTest::parseAndAnalyze()
 		{
 			m_errorList.emplace_back(SyntaxTestError{
 				"UnimplementedFeatureError",
+				nullopt,
 				errorMessage(_e),
 				"",
 				-1,
@@ -106,6 +107,7 @@ void SyntaxTest::filterObtainedErrors()
 		}
 		m_errorList.emplace_back(SyntaxTestError{
 			currentError->typeName(),
+			currentError->errorId(),
 			errorMessage(*currentError),
 			sourceName,
 			locationStart,