SupSuper/OpenXcom — pull request #491 by cfailde (2013-05-26 16:29:03+00:00)
Title: Fixes rare crash when deleting facility in the middle of base

Deleting a base facility at x=2 y=3, so roughly where the ok button is
in the confirm deletion box, can occasionally cause a viewMouseOver
event to fire where the facility just was. As the facility no longer
exists its coordinates are no longer reliable. Checking the coordinates
are sane avoids a potential crash.