[Bug tree-optimization/83648] missing -Wsuggest-attribute=malloc on a trivial malloc-like function

[prathamesh3492 at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83648

--- Comment #2 from prathamesh3492 at gcc dot gnu.org ---
Created attachment 43004
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43004&action=edit
Untested fix