parent: don't kill children when profiling is active.

mitogen/parent.py

@@ -1147,6 +1147,7 @@ class Stream(mitogen.core.Stream):
             LOG.debug('%r: PID %d %s', self, pid, wstatus_to_str(status))
             return
 
+        if not self._router.profiling:
             # For processes like sudo we cannot actually send sudo a signal,
             # because it is setuid, so this is best-effort only.
             LOG.debug('%r: child process still alive, sending SIGTERM', self)