`--print link-args` does not print a newline

[tgross35]

Running with --print link-args doesn't include a trailing \n so the next shell prompt gets smooshed on:

root@886c7cdb990c:/home# rustc a.rs --print link-args
LC_ALL="C" PATH="/root/.rustup/ /* SNIP */ "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"root@886c7cdb990c:/home#

I can't imagine this is intentional since all other --print options seem to include the newline.

rustc 1.81.0-nightly (35b658fb1 2024-07-08)
binary: rustc
commit-hash: 35b658fb1071d752d092751d9f17a9fa7b154ec4
commit-date: 2024-07-08
host: aarch64-unknown-linux-gnu
release: 1.81.0-nightly
LLVM version: 18.1.7

[tgross35]

@rustbot label +E-easy +A-cli +T-compiler -needs-triage

[eggyal]

@rustbot claim