Seg Fault using CLI to get image links

[Hi-ImKyle]

Just like to say sorry for making another issue so quickly after the other was resolved.

Steps to reproduce

1. Using the docs examples but modified came up with grabber -t "Xayah" -s "rule34.paheal.net" -d -i 70 -p 1 --return-images
2. Running said command gets as far as to parse the page then just seg faults

Context

Contents of main.log

[01:23:19.066][Info] Loading images 'http://rule34.paheal.net/post/list/Xayah/1'
[01:23:19.066][Info] [rule34.paheal.net][Html] Loading page `http://rule34.paheal.net/post/list/Xayah/1`
[01:23:19.066][Info] [rule34.paheal.net] Logging in...
[01:23:19.095][Info] [rule34.paheal.net][Html] Receiving page `http://rule34.paheal.net/post/list/Xayah/1`
[01:23:19.114][Info] [rule34.paheal.net][Html] Parsed page `http://rule34.paheal.net/post/list/Xayah/1`: 70 images (70), 15 tags (15), -1 total (560), 8 pages (8)

Contents of settings.ini

[GAnalytics]
cid=d0fd4235-b0da-4c~snip~

Contents of the output

root@UbuntuBionic /home $ grabber -t "Xayah" -s "rule34.paheal.net" -i 70 -p 1 --return-images
Segmentation fault

Screenshots

n/a

System information

• OS: Ubuntu 18.04.4 LTS x86_64
• Grabber version: 7.3.2

Additional context

The seg fault didn't cause any core dumps to appear. I even tried #1863's command and the output was the same.

[Bionus]

It seems like the code is looking for GUI-specific stuff even though it's running in CLI.
I just pushed a fix 👍

[Hi-ImKyle]

Yep, cloned the develop branch, built, and runs just fine. Awesome work.