Update block_actions.js (PrismarineJS#1402)

* Update block_actions.js

* Update block_actions.js

* fix lint

Co-authored-by: Romain Beaumont <[email protected]>

Author: SpikeThatMike

lib/plugins/block_actions.js

@@ -53,6 +53,9 @@ function inject (bot, { version }) {
   bot._client.on('block_action', (packet) => {
     const pt = new Vec3(packet.location.x, packet.location.y, packet.location.z)
     const block = bot.blockAt(pt)
+
+    if (block === null) { return }
+
     const blockName = blocks[packet.blockId].name
 
     if (blockName === 'noteblock') { // Pre 1.13