schbench: fix lost wakeups

Peter had trouble in pipe mode with missing the final wakeup after
sleep_for_runtime decided the run was over.  End result was stuck
processes.

Signed-off-by: Chris Mason <clm@fb.com>
1 file changed
tree: 961d75e78c9a1cda173c4db94c19f7c2fa5b0f81
  1. Makefile
  2. schbench.c