SpacemanDMM_should_not_sleep rejects sleeping procs inside spawns

[pali6]

The following is counted as an error (which seems incorrect to me):

proc/example()
    set SpacemanDMM_should_not_sleep = 1
    spawn(0)
        does_sleep()

proc/does_sleep()
    sleep(42)

Meanwhile sleeping directly inside a spawn is fine (which seems correct):

proc/example()
    set SpacemanDMM_should_not_sleep = 1
    spawn(0)
        sleep(42)

[Cyberboss]

Dupe of #175 methinks

[pali6]

Correct, my apologies!