i fixed a null pointer exception in getLocation of job Smile

src/main/java/xyz/valnet/hadean/gameobjects/jobs/Job.java

@@ -120,11 +120,15 @@ public class Job extends GameObject {
     }
 
     public Vector2i[] getLocations() {
-      Stockpile pile = that.get(Stockpile.class);
-      // Vector4f box = pile.getWorldBox().toXYWH();
-      return new Vector2i[] {
-        pile.getFreeTile()
-      };
+      List<Stockpile> stockpiles = that.getAll(Stockpile.class);
+      for(Stockpile pile : stockpiles) {
+        Vector2i tile = pile.getFreeTile();
+        if(tile == null) continue;
+        return new Vector2i[] {
+          tile
+        };
+      }
+      return new Vector2i[] {};
     }
 
     @Override