[llvm] 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/llvm/lib/Object/ELFObjectFile.cpp b/llvm/lib/Object/ELFObjectFile.cpp
index 31f0090..ef236b8 100644
--- a/llvm/lib/Object/ELFObjectFile.cpp
+++ b/llvm/lib/Object/ELFObjectFile.cpp
@@ -383,7 +383,7 @@ Optional<StringRef> ELFObjectFileBase::tryGetCPUName() const {
   case ELF::EM_PPC64:
     return StringRef("future");
   default:
-    return None;
+    return std::nullopt;
   }
 }
 
@@ -686,7 +686,7 @@ ELFObjectFileBase::getPltAddresses() const {
     if (PltEntryIter != GotToPlt.end()) {
       symbol_iterator Sym = Relocation.getSymbol();
       if (Sym == symbol_end())
-        Result.emplace_back(None, PltEntryIter->second);
+        Result.emplace_back(std::nullopt, PltEntryIter->second);
       else
         Result.emplace_back(Sym->getRawDataRefImpl(), PltEntryIter->second);
     }