DRD: Report an error if an invalid argument is passed to pthread_detach(). Do not assume that pthread_detach() returns an error code if its argument is invalid. Should fix #267968.

git-svn-id: svn://svn.valgrind.org/valgrind/trunk@11614 a5019735-40e9-0310-863c-91ae7b9d1cf9
2 files changed