[Bug testsuite/121215] [16 Regression] random testsuite fails due to afdo-crossnodule-1[b].c addidional sources

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121215

--- Comment #1 from Andreas Schwab <sch...@linux-m68k.org> ---
testsuite/lib/profopt.exp:

profopt-get-options executes dg-additional-sources, but profopt-execute does
not reset the additional_files global after use.