[clang] [Sema] Fix lifetime extension for temporaries in range-based for loops in C++23 (PR #145164)

[via cfe-commits]

================
@@ -1341,6 +1342,13 @@ checkExprLifetimeImpl(Sema &SemaRef, const InitializedEntity *InitEntity,
       }
 
       if (IsGslPtrValueFromGslTempOwner && DiagLoc.isValid()) {
+
+        if (SemaRef.getLangOpts().CPlusPlus23) {
+          if (const VarDecl *VD = cast<VarDecl>(InitEntity->getDecl());
----------------
yronglin wrote:

```suggestion
          if (const VarDecl *VD = dyn_cast_if_present<VarDecl>(InitEntity->getDecl());
```

https://github.com/llvm/llvm-project/pull/145164