[clang] [Clang] only inherit the parent eval context inside of lambdas (PR #124426)

[Timm Baeder via cfe-commits]

================
@@ -35,6 +36,12 @@ inline bool isLambdaCallOperator(const DeclContext *DC) {
   return isLambdaCallOperator(cast<CXXMethodDecl>(DC));
 }
 
+inline bool isLambdaMethod(const DeclContext *DC) {
+  if (auto *MD = dyn_cast_or_null<CXXMethodDecl>(DC); MD)
----------------
tbaederr wrote:

```suggestion
  if (const auto *MD = dyn_cast_if_present<CXXMethodDecl>(DC))
```

https://github.com/llvm/llvm-project/pull/124426