[lldb][NFC] Make OptionValueArgs::GetArgs constant

Author: tkrasnukha

lldb/include/lldb/Interpreter/OptionValueArgs.h

@@ -21,7 +21,7 @@ class OptionValueArgs : public OptionValueArray {
 
   ~OptionValueArgs() override = default;
 
-  size_t GetArgs(Args &args);
+  size_t GetArgs(Args &args) const;
 
   Type GetType() const override { return eTypeArgs; }
 };

lldb/source/Interpreter/OptionValueArgs.cpp

@@ -13,9 +13,9 @@
 using namespace lldb;
 using namespace lldb_private;
 
-size_t OptionValueArgs::GetArgs(Args &args) {
+size_t OptionValueArgs::GetArgs(Args &args) const {
   args.Clear();
-  for (auto value : m_values) {
+  for (const auto &value : m_values) {
     llvm::StringRef string_value = value->GetStringValue();
     if (!string_value.empty())
       args.AppendArgument(string_value);