LoW: fix missing persistent carryover at end of chapter 4

data/campaigns/Legend_of_Wesmere/scenarios/chapter4/17_Breaking_the_Siege.cfg

@@ -413,6 +413,20 @@
         [/message]
     [/event]
 
+    [event]
+        name=scenario_end
+        [filter_condition]
+            [proceed_to_next_scenario]
+            [/proceed_to_next_scenario]
+        [/filter_condition]
+
+#ifdef MULTIPLAYER
+        [persistent_carryover_store]
+            scenario_id = LoW_Chapter_Four
+        [/persistent_carryover_store]
+#endif
+    [/event]
+
     # wmllint: unwho "{OLURF}"
     {campaigns/Legend_of_Wesmere/utils/deaths.cfg}
 [/scenario]

data/campaigns/Legend_of_Wesmere/scenarios/chapter5/19_Costly_Revenge.cfg

@@ -100,7 +100,11 @@ Chapter Five"
     [/side]
     [event]
         name=prestart
-
+#ifdef MULTIPLAYER
+        [persistent_carryover_unstore]
+            scenario_id = LoW_Chapter_Four
+        [/persistent_carryover_unstore]
+#endif
 #ifndef MULTIPLAYER
         [kill]
             race=dwarf