Handle empty token list gracefully.

This was SVN commit r13477.

binaries/data/mods/public/simulation/components/Attack.js

@@ -199,7 +199,8 @@ Attack.prototype.GetAttackTypes = function()
 
 Attack.prototype.GetPreferredClasses = function(type)
 {
-	if (this.template[type] && this.template[type].PreferredClasses)
+	if (this.template[type] && this.template[type].PreferredClasses
+	    && this.template[type].PreferredClasses._string)
 	{
 		return this.template[type].PreferredClasses._string.split(/\s+/);
 	}
@@ -208,7 +209,8 @@ Attack.prototype.GetPreferredClasses = function(type)
 
 Attack.prototype.GetRestrictedClasses = function(type)
 {
-	if (this.template[type] && this.template[type].RestrictedClasses)
+	if (this.template[type] && this.template[type].RestrictedClasses
+	    && this.template[type].RestrictedClasses._string)
 	{
 		return this.template[type].RestrictedClasses._string.split(/\s+/);
 	}

binaries/data/mods/public/simulation/components/GarrisonHolder.js

@@ -54,7 +54,7 @@ GarrisonHolder.prototype.GetEntities = function()
  */
 GarrisonHolder.prototype.GetAllowedClassesList = function()
 {
-	var string = this.template.List._string;
+	var string = this.template.List._string || "";
 	return string.split(/\s+/);
 };
 

binaries/data/mods/public/simulation/components/ProductionQueue.js

@@ -76,6 +76,8 @@ ProductionQueue.prototype.GetEntitiesList = function()
 		return [];
 	
 	var string = this.template.Entities._string;
+	if (!string)
+		return [];
 	
 	// Replace the "{civ}" codes with this entity's civ ID
 	var cmpIdentity = Engine.QueryInterface(this.entity, IID_Identity);
@@ -94,6 +96,8 @@ ProductionQueue.prototype.GetTechnologiesList = function()
 		return [];
 	
 	var string = this.template.Technologies._string;
+	if (!string)
+		return [];
 	
 	var cmpTechnologyManager = QueryOwnerInterface(this.entity, IID_TechnologyManager);
 	if (!cmpTechnologyManager)

binaries/data/mods/public/simulation/templates/structures/iber_wall_tower.xml

@@ -14,13 +14,13 @@
   </Obstruction>
   <ProductionQueue>
     <Technologies datatype="tokens">
-	  -pair_walls_01
+      -pair_walls_01
     </Technologies>
   </ProductionQueue>
   <VisualActor>
     <Actor>structures/iberians/wall_tower.xml</Actor>
   </VisualActor>
   <WallPiece>
-  	<Length>10</Length>
+    <Length>10</Length>
   </WallPiece>
 </Entity>

binaries/data/mods/public/simulation/templates/template_structure_defense_wall_tower.xml

@@ -62,7 +62,7 @@
   <ProductionQueue>
     <BatchTimeModifier>0.8</BatchTimeModifier>
     <Technologies datatype="tokens">
-	  pair_walls_01
+      pair_walls_01
     </Technologies>
   </ProductionQueue>
   <Sound>