[llvm] [RISCV] Fix the disassembler's handling of C.LUI when imm=0 (PR #133450)

[Craig Topper via llvm-commits]

topperc wrote:

> Thank you. Assuming you're happy, would you be kind enough to merge it for me, please?

Yes. I'll merge it when at least one of the linux or windows build finishes.

https://github.com/llvm/llvm-project/pull/133450