[clang] [clang] Fix the crash when dumping deserialized decls (PR #133395)

[Ilya Biryukov via cfe-commits]

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@@ -316,6 +316,7 @@ Bug Fixes in This Version
 - Fixed a modules crash where exception specifications were not propagated properly (#GH121245, relanded in #GH129982)
 - Fixed a problematic case with recursive deserialization within ``FinishedDeserializing()`` where
   ``PassInterestingDeclsToConsumer()`` was called before the declarations were safe to be passed. (#GH129982)
+- Fixed a module crash with `-dump-deserialized-decls`
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ilya-biryukov wrote:

NIT: is it `-Xclang=-dump-deserialized-decls`? Users might be confused if they decide to try it out simply because it's mentioned in the release notes.

https://github.com/llvm/llvm-project/pull/133395