Fix presing escape when using the Attack talent

git-svn-id: http://svn.net-core.org/repos/t-engine4@2924 51575b47-30f0-44d4-a5cc-537603b46e54

game/modules/tome/data/talents/misc/misc.lua

@@ -44,7 +44,9 @@ newTalent{
 	action = function(self, t)
 		local tg = self:getTalentTarget(t)
 		local x, y = self:getTarget(tg)
+		if not x then return end
 		local _ _, x, y = self:canProject(tg, x, y)
+		if not x then return end
 		local target = game.level.map(x, y, engine.Map.ACTOR)
 		if not target then return end