If the future is not successful the channel may have been closed. The
pipeline of a closed channel is empty, so attempting to remove handlers
from it would cause an exception.
Signed-off-by: Graham <gpe@openrs2.org>
This fixes a 1 in 2^32 chance that we'll fail to fetch the world list on
startup.
Of course, updating the player counts will still be borked if we get a
collision, but at least the client won't break entirely.
Signed-off-by: Graham <gpe@openrs2.org>
Graham