[Bug d/113772] [14 Regression] atomic.d compile error since recent upstream imports.

[doko at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113772

--- Comment #14 from Matthias Klose <doko at gcc dot gnu.org> ---
the proposed patch also fixes the arm-linux-gnueabi build (armv5t)