dumpcore: Only dump core if status=SOLO5_EXIT_ABORT
dumpcore: Only dump core if status=SOLO5_EXIT_ABORT

This check was mistakenly elided during an overzealous cleanup pass.

Solo5/solo5,mato/solo5,Weichen81/solo5,Solo5/solo5,djwillia/solo5,Weichen81/solo5,Weichen81/solo5,mato/solo5,mato/solo5,djwillia/solo5,djwillia/solo5