RIOT-OS/RIOT — pull request #1791 by Kijewski (2014-10-10 09:30:50+00:00)
Title: core: typo in msg_send_int()

`msg_send_int()` sets `m->sender_pid = target_pid` which does not make
sense. The receiver knows its own PID.

`m->sender_pid = sched_active_pid` is correct.