[lldb] Use std::optional instead of llvm::Optional (NFC)

This patch replaces (llvm::|)Optional< with std::optional<.  I'll post
a separate patch to clean up the "using" declarations, #include
"llvm/ADT/Optional.h", etc.

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, 3 insertions, 3 deletions

diff --git a/lldb/source/Target/UnixSignals.cpp b/lldb/source/Target/UnixSignals.cpp
index 9cfc0a0..858b169 100644
--- a/lldb/source/Target/UnixSignals.cpp
+++ b/lldb/source/Target/UnixSignals.cpp
@@ -286,9 +286,9 @@ int32_t UnixSignals::GetSignalAtIndex(int32_t index) const {
 uint64_t UnixSignals::GetVersion() const { return m_version; }
 
 std::vector<int32_t>
-UnixSignals::GetFilteredSignals(llvm::Optional<bool> should_suppress,
-                                llvm::Optional<bool> should_stop,
-                                llvm::Optional<bool> should_notify) {
+UnixSignals::GetFilteredSignals(std::optional<bool> should_suppress,
+                                std::optional<bool> should_stop,
+                                std::optional<bool> should_notify) {
   std::vector<int32_t> result;
   for (int32_t signo = GetFirstSignalNumber();
        signo != LLDB_INVALID_SIGNAL_NUMBER;