make endermen not teleport everytime when hitted

mods/ENTITIES/mobs_mc/enderman.lua

@@ -534,9 +534,11 @@ mobs:register_mob("mobs_mc:enderman", {
 			--if (minetest.get_timeofday() * 24000) > 5001 and (minetest.get_timeofday() * 24000) < 19000 then
 			--	self:teleport(nil)
 			--else
+			if pr:next(1, 8) == 8 then --FIXME: real mc rate
 				self:teleport(hitter)
-				self.attack=hitter
-				self.state="attack"
+			end
+			self.attack=hitter
+			self.state="attack"
 			--end
 		end
 	end,