tree 411e728f73fa9e3b5c1fc8b065823d68cae94307
parent 773c697f815d43182adf1eb430f4899255088d6b
author Josh Gao <jmgao@google.com> 1539814983 -0700
committer Josh Gao <jmgao@google.com> 1539822956 -0700

Properly fail with ESRCH when pthread_killing an exited thread.

Previously, we were callign tgkill(pid, 0, signal) instead, which would
fail with EINVAL instead.

Test: bionic-unit-tests
Change-Id: I25b127dcf347e0223274502b0516a950b6c2093e