[llvm] [llvm-objdump, SHT_LLVM_BB_ADDR_MAP, NFC] Use auto && instead of const auto & to allow moving from BBAddrMap objects. (PR #79456)

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

Thanks for fixing this. I swore I put this in the patch before landing, but apparently not. Thanks for fixing this!

https://github.com/llvm/llvm-project/pull/79456