[clang] [NFC][RootSignatures] Conform to new std::optional calling conventions (PR #136747)
@@ -26,22 +26,14 @@ RootSignatureParser::RootSignatureParser(SmallVector &Elements, bool RootSignatureParser::parse() { // Iterate as many RootElements as possible - while (tryConsumeExpectedToken(TokenKind::kw_DescriptorTable)) { -// Dispatch onto parser method. -
