Fix strange conditional in BookBot.java

[VallionXD]

Type of change

• Bug fix
• New feature

Description

A summary of the changes along with the reasoning behind the changes.

Fixed a null pointer access warning by changing the condition from

(component != null || component.pages().isEmpty())

to

(component == null || component.pages().isEmpty())

If you didn't see the difference, changed to != from ==.

Related issues

None as far as I am aware.

How Has This Been Tested?

Videos or screenshots of the changes if applicable.

A patch this small doesn't require testing.. just look at the change.

Checklist:

• My code follows the style guidelines of this project.
• I have added comments to my code in more complex areas.
• I have tested the code in both development and production environments.

[crosby-moe]

can confirm, bookbot crashes with /give @s writable_book[!minecraft:writable_book_content]