bitbake: knotty: Set exit failure code on runQueueTaskFailed events

If the worker segfaults, we may never see a TaskFailed event from it, only
a runQueueTaskFailed event. In this case, return_value isn't getting set
leading to an incorrect exit code from bitbake. Fix by setting return_value
in both places.

(Bitbake rev: e5dd50e0d95d532fe31dde61f8c6b1a7a72321e9)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/ui/knotty.py

@@ -490,6 +490,7 @@ def main(server, eventHandler, params, tf = TerminalFilter):
                 continue
 
             if isinstance(event, bb.runqueue.runQueueTaskFailed):
+                return_value = 1
                 taskfailures.append(event.taskstring)
                 logger.error("Task %s (%s) failed with exit code '%s'",
                              event.taskid, event.taskstring, event.exitcode)