Fix Jarek last breath message

There is a scenario, where you have Gerrick as leader, while Deoran is left behind. Perhaps dialogue could be made better, so Jarek tells something to Gerrick instead.

data/campaigns/The_South_Guard/utils/sg_deaths.cfg

@@ -88,10 +88,23 @@
     [filter]
         id=Jarek
     [/filter]
-    [message]
-        speaker=unit
-        message= _ "Far from home I fall — but not in vain! Guard our people, Deoran!"
-    [/message]
+    [if]
+        [have_unit]
+            id=Deoran
+        [/have_unit]
+        [then]
+            [message]
+                speaker=unit
+                message= _ "Far from home I fall — but not in vain! Guard our people, Deoran!"
+            [/message]
+        [/then]
+        [else]
+            [message]
+                speaker=unit
+                message= _ "Far from home I fall — but not in vain!"
+            [/message]
+        [/else]
+    [/if]
 [/event]
 
 # Brigands and Enemies