[lldb] Use std::nullopt instead of None (NFC)

This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated.  The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.

This is part of an effort to migrate from llvm::Optional to
std::optional:

https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716

1 files changed, 2 insertions, 2 deletions

diff --git a/lldb/source/Symbol/TypeSystem.cpp b/lldb/source/Symbol/TypeSystem.cpp
index 7671f11847f4..d1d78fc1eec5 100644
--- a/lldb/source/Symbol/TypeSystem.cpp
+++ b/lldb/source/Symbol/TypeSystem.cpp
@@ -135,7 +135,7 @@ CompilerType TypeSystem::GetTypeTemplateArgument(opaque_compiler_type_t type,
 llvm::Optional<CompilerType::IntegralTemplateArgument>
 TypeSystem::GetIntegralTemplateArgument(opaque_compiler_type_t type, size_t idx,
                                         bool expand_pack) {
-  return llvm::None;
+  return std::nullopt;
 }
 
 LazyBool TypeSystem::ShouldPrintAsOneLiner(void *type, ValueObject *valobj) {
@@ -177,7 +177,7 @@ TypeSystem::CreateUtilityFunction(std::string text, std::string name) {
 }
 
 llvm::Optional<llvm::json::Value> TypeSystem::ReportStatistics() {
-  return llvm::None;
+  return std::nullopt;
 }
 
 #pragma mark TypeSystemMap