Avoid crash when npc don't find alternative place to go

actions/places.lua

@@ -259,10 +259,10 @@ function npc.places.find_unused_place(self, place_category, place_type, original
 				return alternative_places[i]
 			end
 		end
-		--result = original_place
+		--else
-	else
-		result = original_place
 	end
+	result = original_place
+	
 	return result
 end