[clang] [Clang] Correctly handle taking the address of an explicit object member function template (PR #147046)

[Aaron Ballman via cfe-commits]

================
@@ -7876,6 +7883,7 @@ static void AddMethodTemplateCandidateImmediately(
   //   function template are combined with the set of non-template candidate
   //   functions.
   TemplateDeductionInfo Info(CandidateSet.getLocation());
+  auto Method = cast<CXXMethodDecl>(MethodTmpl->getTemplatedDecl());
----------------
AaronBallman wrote:

```suggestion
  auto *Method = cast<CXXMethodDecl>(MethodTmpl->getTemplatedDecl());
```

https://github.com/llvm/llvm-project/pull/147046