[Bug fortran/42693] Missing gcc-internal-format on messages from gfc_arith_error

[markeggleston at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=42693

markeggleston at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #7 from markeggleston at gcc dot gnu.org ---
Committed to master.