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

[Maksim Ivanov via cfe-commits]

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@@ -3602,6 +3602,10 @@ class MemberPointerType : public Type, public llvm::FoldingSetNode {
   }
 
   NestedNameSpecifier *getQualifier() const { return Qualifier; }
+  CXXRecordDecl *getCXXRecordDecl() const;
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emaxx-google wrote:

Sure, done. @mizvekov I'll also create a follow-up PR to rename the method - we can discuss the most appropriate choice there.

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