[Bug testsuite/70699] Add dot-file scan to pr70161.c test-case

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70699

vries at gcc dot gnu.org changed:

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

--- Comment #4 from vries at gcc dot gnu.org ---
Testsuite patch committed, marking resolved-fixed.