[Bug fortran/107441] optional arguments are identified as "present" when missing

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107441

--- Comment #6 from anlauf at gcc dot gnu.org ---
Created attachment 53782
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53782&action=edit
Patch

Regtesting the attached patch.