[PATCH] D155506: [clang][JumpDiagnostics] use StmtClass rather than dyn_cast chain NFC

[John McCall via Phabricator via cfe-commits]

rjmccall added a comment.

In D155506#4508176 <https://reviews.llvm.org/D155506#4508176>, @gribozavr2 wrote:

> I'm not sure it is actually an anti-pattern. `dyn_cast` will transparently handle subclasses, should any be added in the future, but a switch wouldn't.

Yeah, I don't think we have a strong style preference either way, here, given that this can't be an exhaustive switch anyway.


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