JobScheduler should not crash if all nodes of a nested job chain are skipped

.14 11:45:54.656 scheduler    0 41880.9FF0 1687.848MB .{scheduler} Execute <job_chain_node.modify action="next_state" job_chain="/test/nested2" state="start"/>
.14 11:45:54.657 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   SCHEDULER-965  Executing command <job_chain_node.modify action="next_state" job_chain="/test/nested2" state="start"/>
.14 11:45:54.657 scheduler    0 41880.9FF0 1687.848MB .{scheduler} job_chain::Node test/nested2:2 set_action next_state
.14 11:45:54.658 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [debug9] (Order_queue test/nested2:start) remove_order Order test/nested2:master
.14 11:45:54.658 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   (Order test/nested2:master) set_state success, at=never
.14 11:45:54.667 scheduler   15 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   (Order test/nested2:master) SCHEDULER-940  Removing order from job chain
.14 11:45:54.667 scheduler    0 41880.9FF0 1687.848MB .{scheduler.order} sos::scheduler::Standard_job::on_order_possibly_available
.14 11:45:54.667 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   (Order master) SCHEDULER-944  End state reached - order will be repeated at 2038-01-19 03:14:07.000Z with state=100
.14 11:45:54.667 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   (Order master) SCHEDULER-862  Continuing in 'Job_chain /test/nested1'
.14 11:45:54.667 scheduler    0 41880.9FF0 1687.848MB .{scheduler.mainlog} [info]   (Order master) SCHEDULER-862  Continuing in 'Job_chain /test/nested2'
.14 11:45:54.688 scheduler   16 41880.9FF0 1697.625MB .
.14 11:45:54.688 scheduler    0 41880.9FF0 1697.625MB .******* ~Sos_self_deleting mit 3 Referenzen *******
.14 11:45:54.688 scheduler    0 41880.9FF0 1697.625MB .
.14 11:45:54.835 scheduler 4609 13256.33F4 1542.324MB .{socket.recv} pid=0 recv(1212,size=50000)  ret=-1 err=10054
.14 11:45:54.835 scheduler    0 13256.33F4 1542.324MB .[ERROR WINSOCK-10054  WSAECONNRESET - Connection reset by peer [recv]]
.14 11:45:54.869 scheduler   31 13256.33F4 1542.324MB .[ERROR WINSOCK-10054  WSAECONNRESET - Connection reset by peer [recv]]
.14 11:45:54.869 scheduler    0 13256.33F4 1542.324MB .[xc.append "pid=0"]
.14 11:45:54.895 scheduler   16 13256.33F4 1542.324MB .pid=0 Open objects:
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .221E903D.00000003 - 0000000002563518 sos::scheduler::com_objects::Com_task_proxy -> sos::scheduler::com_objects::Com_task
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .467F743F.00000001 - 000000000251BBF0 sos::scheduler::Com_remote_module_instance_server
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .4F6B650B.00000002 - 0000000002543560 zschimmer::com::object_server::Proxy -> sos::scheduler::com_objects::Com_job
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .62E86535.00000001 - 000000000251B5E8 sos::scheduler::com_objects::Com_spooler_proxy -> sos::scheduler::com_objects::Com_spooler
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .6B84B69A.00000004 - 0000000002581CD0 sos::scheduler::com_objects::Com_log_proxy -> sos::scheduler::com_objects::Com_log
.14 11:45:54.895 scheduler    0 13256.33F4 1542.324MB .
.14 11:45:54.900 scheduler   16 13256.33F4 1542.324MB {socket} closesocket(1212) ==> 0
.14 11:45:54.900 scheduler    0 13256.33F4 1542.324MB {scheduler} WINSOCK-10054  WSAECONNRESET - Connection reset by peer [recv] / pid=0
.14 11:45:54.900 scheduler    0 13256.33F4 1542.324MB {env} SetEnvironmentVariable("LD_LIBRARY_PATH","")