[Bug ada/115133] [15 regression] s-oslock__solaris.ads doesn't compile

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115133

--- Comment #3 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
Created attachment 58228
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58228&action=edit
Tentative fix