[Bug target/85142] Wrong -print-multi-os-directory & -print-multi-lib output for riscv64 + multilib

[rjones at redhat dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85142

--- Comment #6 from Richard W.M. Jones <rjones at redhat dot com> ---
The paste removed the "di" from "diff" but the patch is otherwise
as posted.