[clang] [clang] Fix nondeterminism in MemberPointerType (PR #137910)

[Erich Keane via cfe-commits]

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@@ -3610,7 +3611,7 @@ class MemberPointerType : public Type, public llvm::FoldingSetNode {
   }
 
   void Profile(llvm::FoldingSetNodeID &ID) {
-    Profile(ID, getPointeeType(), getQualifier(), getMostRecentCXXRecordDecl());
+    Profile(ID, getPointeeType(), getQualifier(), getCXXRecordDecl());
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erichkeane wrote:

Hmm... then I'm surprised that this patch is needed at all for the purposes of non-determinism.  `getMostRecentCXXRecordDecl()->getCanonicalDecl()` will get the same declaration as `getCXXRecordDecl()->getCanonicalDecl()`.

https://github.com/llvm/llvm-project/pull/137910