Don't crash if a plugin with a pending URL job calls bz_shutdown()
Don't crash if a plugin with a pending URL job calls bz_shutdown()

khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag,khonkhortisan/bzflag