Fixes #5825: killall is not available on all system, hence the command to reload the server after promises generation may fail
Merge pull request #548 from peckpeck/bug_5825/killall_is_not_available_on_all_system_hence_the_command_to_reload_the_server_after_promises_generation_may_fail

Fixes #5825: killall is not available on all system, hence the command to reload the server after promises generation may fail