[lld] [lld][WebAssembly] Return 0 for synthetic function offsets (PR #96134)

[Sam Clegg via llvm-commits]

https://github.com/sbc100 commented:

Nice work finding this!  Do you know what C/C++ is needed to reproduce? i.e. why haven't we seen it before?

https://github.com/llvm/llvm-project/pull/96134