Add null check to creating default NBT data

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_15_2/BlockMaterial_1_15_2.java

@@ -39,7 +39,7 @@ public class BlockMaterial_1_15_2 implements BlockMaterial {
         this.isTranslucent = !(boolean) ReflectionUtil.getField(Block.class, block, "v");
         opacity = defaultState.b(BlockAccessAir.INSTANCE, BlockPosition.ZERO);
         TileEntity tileEntity = !block.isTileEntity() ? null : ((ITileEntity)block).createTile(null);
-        tile = new LazyCompoundTag_1_15_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
+        tile = tileEntity == null ? null : new LazyCompoundTag_1_15_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
     }
 
     public Block getBlock() {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_1/BlockMaterial_1_16_1.java

@@ -41,7 +41,7 @@ public class BlockMaterial_1_16_1 implements BlockMaterial {
         this.isTranslucent = !(boolean)ReflectionUtil.getField(BlockBase.Info.class, blockInfo, "n");
         opacity = defaultState.b(BlockAccessAir.INSTANCE, BlockPosition.ZERO);
         TileEntity tileEntity = !block.isTileEntity() ? null : ((ITileEntity)block).createTile(null);
-        tile = new LazyCompoundTag_1_16_1(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
+        tile = tileEntity == null ? null : new LazyCompoundTag_1_16_1(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
     }
 
     public Block getBlock() {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_2/BlockMaterial_1_16_2.java

@@ -41,7 +41,7 @@ public class BlockMaterial_1_16_2 implements BlockMaterial {
         this.isTranslucent = !(boolean)ReflectionUtil.getField(BlockBase.Info.class, blockInfo, "n");
         opacity = defaultState.b(BlockAccessAir.INSTANCE, BlockPosition.ZERO);
         TileEntity tileEntity = !block.isTileEntity() ? null : ((ITileEntity)block).createTile(null);
-        tile = new LazyCompoundTag_1_16_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
+        tile = tileEntity == null ? null : new LazyCompoundTag_1_16_2(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
     }
 
     public Block getBlock() {

worldedit-bukkit/src/main/java/com/boydti/fawe/bukkit/adapter/mc1_16_5/BlockMaterial_1_16_5.java

@@ -41,7 +41,7 @@ public class BlockMaterial_1_16_5 implements BlockMaterial {
         this.isTranslucent = !(boolean)ReflectionUtil.getField(BlockBase.Info.class, blockInfo, "n");
         opacity = defaultState.b(BlockAccessAir.INSTANCE, BlockPosition.ZERO);
         TileEntity tileEntity = !block.isTileEntity() ? null : ((ITileEntity)block).createTile(null);
-        tile = new LazyCompoundTag_1_16_5(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
+        tile = tileEntity == null ? null : new LazyCompoundTag_1_16_5(Suppliers.memoize(() -> tileEntity.save(new NBTTagCompound())));
     }
 
     public Block getBlock() {

worldedit-core/src/main/java/com/sk89q/worldedit/world/block/BlockTypesCache.java

@@ -2,6 +2,7 @@ package com.sk89q.worldedit.world.block;
 
 import com.boydti.fawe.util.MathMan;
 import com.google.common.primitives.Booleans;
+import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.extension.platform.Platform;
@@ -98,7 +99,9 @@ public class BlockTypesCache {
                     int ordinal = this.stateOrdinals[propId];
                     if (ordinal != -1) {
                         int stateId = internalId + (propId << BIT_OFFSET);
-                        BlockState state = new BlockState(type, stateId, ordinal, blockMaterial.getDefaultTile());
+                        CompoundTag defaultNBT = blockMaterial.getDefaultTile();
+                        BlockState state = defaultNBT != null ? new BlockState(type, stateId, ordinal, blockMaterial.getDefaultTile()) :
+                            new BlockState(type, stateId, ordinal);
                         states.add(state);
                     }
                 }
@@ -106,7 +109,9 @@ public class BlockTypesCache {
 
                 this.defaultState = states.get(this.stateOrdinals[defaultPropId]);
             } else {
-                this.defaultState = new BlockState(type, internalId, states.size(), blockMaterial.getDefaultTile());
+                CompoundTag defaultNBT = blockMaterial.getDefaultTile();
+                this.defaultState = defaultNBT != null ? new BlockState(type, internalId, states.size(), blockMaterial.getDefaultTile()) :
+                    new BlockState(type, internalId, states.size());
                 states.add(this.defaultState);
             }
         }

worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/BlockMaterial.java

@@ -20,6 +20,7 @@
 package com.sk89q.worldedit.world.registry;
 
 import com.sk89q.jnbt.CompoundTag;
+import org.jetbrains.annotations.Nullable;
 
 /**
  * Describes the material for a block.
@@ -179,6 +180,7 @@ public interface BlockMaterial {
      *
      * @return default tile entity data
      */
+    @Nullable
     CompoundTag getDefaultTile();
 
     /**