fix npe

Author: Toffikk

src/main/java/ca/spottedleaf/moonrise/mixin/block_counting/LevelChunkSectionMixin.java

@@ -124,14 +124,13 @@ private void updateBlockCallback(final int x, final int y, final int z, final Bl
         final boolean oldTicking = oldState.isRandomlyTicking();
         final boolean newTicking = newState.isRandomlyTicking();
         if (oldTicking != newTicking) {
+            this.createTickingBlocks();
             final ShortList tickingBlocks = this.tickingBlocks;
             final short position = (short)(x | (z << 4) | (y << (4+4)));
 
             if (oldTicking) {
-                this.createTickingBlocks();
                 tickingBlocks.remove(position);
             } else {
-                this.createTickingBlocks();
                 tickingBlocks.add(position);
             }
         }
@@ -199,7 +198,8 @@ public void recalcBlockCounts() {
                     this.tickingBlockCount += (short)paletteCount;
                     final short[] raw = coordinates.elements();
                     final int rawLen = raw.length;
-
+                    
+                    this.createTickingBlocks();
                     final ShortList tickingBlocks = this.tickingBlocks;
 
                     tickingBlocks.setMinCapacity(Math.min((rawLen + tickingBlocks.size()) * 3 / 2, 16*16*16));