messageDeleteBulk event fires twice

[xDimGG]

Please describe the problem you are having in as much detail as possible:
The messageDeleteBulk event is fired twice

Include a reproducible code sample here, if possible:

const { Client } = require('discord.js');
const bot = new Client();

bot.on('message', msg => {
  if (msg.content === '!bulk-delete') msg.channel.bulkDelete(2);
});

bot.on('messageDeleteBulk', m => console.log(`Bulk deleted ${m.size} messages.`));

bot.login('token');

Further details:

• discord.js version: Master

• node.js version: 8.6.0

• Operating system: Windows 10

• Priority this issue should have – please be realistic and elaborate if possible: Medium-High

• I found this issue while running code on a user account

• I have also tested the issue on latest master, commit hash: 68a3058

[robflop]

I've just confirmed this on the provided hash (latest at time of writing). Looking into it now.