[llvm] [AVR] Fix a crash in AVRInstrInfo::insertIndirectBranch (PR #67324)

[via llvm-commits]

aykevl wrote:

> With the attached b.s, an linker error is reported as

And what about the LLVM linker (lld)? Does it report a similar error?
(I would assume so, because LLD normally generates such "out of space" errors).

> but it is not easy to add such a test into my patch.

No I don't think it should be part of the test, just something to verify before committing.

In any case, I think this patch is ready to go from my POV, but perhaps others will like to take a look as well.

https://github.com/llvm/llvm-project/pull/67324