[lld] [llvm] [WebAssembly] Add exnref type (PR #93586)

[Heejin Ahn via llvm-commits]

aheejin wrote:

Sorry, this caused a compilation warning:
```console
llvm-project/llvm/lib/IR/Function.cpp:1091:11: warning: enumeration value 'IIT_EXNREF' not handled in switch [-Wswitch]
 1091 |   switch (Info) {
      |           ^~~~
1 warning generated.
```
which should be fixed by https://github.com/llvm/llvm-project/commit/6f529aaf666624c26715aa348955b26a684d1250.

https://github.com/llvm/llvm-project/pull/93586