THoT S07 Fix bug: Ratheln is a defeat condition

Ratheln must remain a Hero thoughout this scenario since, if he dies, the end sequence suffers terribly. On EASY, for later scenario, he is no longer a Hero; simply Loyal.

data/campaigns/The_Hammer_of_Thursagan/scenarios/06_High_Pass.cfg

@@ -365,13 +365,6 @@
             message= _ "Aye. But I’ve a grim feeling we might be going to discover that in person."
         [/message]
 
-        {UNMAKE_HERO Ratheln}
-
-        [unit_overlay]
-            id=Ratheln
-            image=misc/loyal-icon.png
-        [/unit_overlay]
-
         [endlevel]
             result=victory
             bonus=yes

data/campaigns/The_Hammer_of_Thursagan/scenarios/07_Mages_and_Drakes.cfg

@@ -124,6 +124,10 @@
                 description= _ "Death of Angarthing"
                 condition=lose
             [/objective]
+            [objective]
+                description= _ "Death of Ratheln"
+                condition=lose
+            [/objective]
 
             {TURNS_RUN_OUT}
 
@@ -253,6 +257,13 @@
                     id=Ratheln
                 [/kill]
 #else
+                {UNMAKE_HERO Ratheln}
+
+                [unit_overlay]
+                    id=Ratheln
+                    image=misc/loyal-icon.png
+                [/unit_overlay]
+
                 [message]
                     speaker=Ratheln
                     message= _ "Perrin, I owe these dwarves a debt; I think it is my duty to aid them in their journey. I’ll return with your apprentices as soon as I may."
@@ -296,4 +307,18 @@
     {HERODEATH_AIGLONDUR}
     {HERODEATH_ANGARTHING}
     {HERODEATH_RATHELN}
+
+    # In this scenario only, losing Ratheln is fatal.
+    # This avoids continuity problems in this scenario.
+    # His death comment comes from the macro, above.
+    [event]
+        name=die
+        [filter]
+            id=Ratheln
+        [/filter]
+
+        [endlevel]
+            result=defeat
+        [/endlevel]
+    [/event]
 [/scenario]