fixing random edit

Author: akuhlens

flang/docs/ImplementingASemanticCheck.md

@@ -775,7 +775,7 @@ to make sure that the names were clear.  Here's what I ended up with:
 
 ```C++
   void DoChecker::Leave(const parser::Expr &parsedExpr) {
-    ActualArgumentSet argSet{CollectActualArguments((parsedExpr))};
+    ActualArgumentSet argSet{CollectActualArguments(GetExpr(parsedExpr))};
     for (const evaluate::ActualArgumentRef &argRef : argSet) {
       if (const SomeExpr * argExpr{argRef->UnwrapExpr()}) {
         if (const Symbol * var{evaluate::UnwrapWholeSymbolDataRef(*argExpr)}) {

flang/lib/Evaluate/variable.cpp

@@ -811,6 +811,11 @@ bool Designator<T>::IsPathFrom(const Designator<T> &that) const {
   return TestVariableIsPathFromRoot(*this, that);
 }
 
+template <typename T, typename U>
+optional<bool> Designator<T>::IsSameEntity(const Designator<U> &that) const {
+  return std::nullopt;
+}
+
 #ifdef _MSC_VER // disable bogus warning about missing definitions
 #pragma warning(disable : 4661)
 #endif