[Bug target/90621] [mingw] Command line switch -print-multiarch prints nothing

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90621

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
More to the point is that if multi-arch is not used, then it is empty.  This is
true on Linux as it is true under mingw.