[clang] [clang] Check inline defs when emitting speculative vtable (PR #100785)

[Eli Friedman via cfe-commits]

efriedma-quic wrote:

Can you give a self-contained example that shows why this is a problem?  (I mean, I can imagine there could be some interaction that causes issues, but I'm not sure what that interaction is, in this context.)

https://github.com/llvm/llvm-project/pull/100785