[clang][NFC] Remove unused parameter from ParseConstantExpression

Author: tbaederr

clang/include/clang/Parse/Parser.h

@@ -1763,7 +1763,7 @@ class Parser : public CodeCompletionHandler {
   ExprResult ParseExpression(TypeCastState isTypeCast = NotTypeCast);
   ExprResult ParseConstantExpressionInExprEvalContext(
       TypeCastState isTypeCast = NotTypeCast);
-  ExprResult ParseConstantExpression(TypeCastState isTypeCast = NotTypeCast);
+  ExprResult ParseConstantExpression();
   ExprResult ParseCaseExpression(SourceLocation CaseLoc);
   ExprResult ParseConstraintExpression();
   ExprResult

clang/lib/Parse/ParseExpr.cpp

@@ -208,14 +208,14 @@ Parser::ParseConstantExpressionInExprEvalContext(TypeCastState isTypeCast) {
   return Actions.ActOnConstantExpression(Res);
 }
 
-ExprResult Parser::ParseConstantExpression(TypeCastState isTypeCast) {
+ExprResult Parser::ParseConstantExpression() {
   // C++03 [basic.def.odr]p2:
   //   An expression is potentially evaluated unless it appears where an
   //   integral constant expression is required (see 5.19) [...].
   // C++98 and C++11 have no such rule, but this is only a defect in C++98.
   EnterExpressionEvaluationContext ConstantEvaluated(
       Actions, Sema::ExpressionEvaluationContext::ConstantEvaluated);
-  return ParseConstantExpressionInExprEvalContext(isTypeCast);
+  return ParseConstantExpressionInExprEvalContext(NotTypeCast);
 }
 
 ExprResult Parser::ParseCaseExpression(SourceLocation CaseLoc) {