HttT: Fix OOS when redoing a recall and Li'sar is allied

For #2216.

data/campaigns/Heir_To_The_Throne/utils/abilities.cfg

@@ -85,6 +85,18 @@ _"This unit's grasp of melee tactics allows adjacent allies to strike the first
         [/filter]
         [allow_undo]
         [/allow_undo]
+        [on_undo]
+            [modify_unit]
+                [filter]
+                    id=$unit.id
+                [/filter]
+                [effect]
+                    apply_to=attack
+                    range=melee
+                    remove_specials=initiative
+                [/effect]
+            [/modify_unit]
+        [/on_undo]
 
         {INITIATIVE_OBJECT x,y=$x1,$y1}
     [/event]