Added a null check for the Will getter for the Aura incase the WillChunk somehow does not generate. (#1011)

(cherry picked from commit f083071)

src/main/java/WayofTime/bloodmagic/demonAura/WorldDemonWillHandler.java

@@ -177,6 +177,11 @@ public class WorldDemonWillHandler
     {
         WillChunk willChunk = getWillChunk(world, pos);
 
+        if (willChunk == null)
+        {
+            return 0;
+        }
+
         DemonWillHolder currentWill = willChunk.getCurrentWill();
         return currentWill.getWill(type);
     }