Undefined behaviour when using vector.resize()

[Zaita]

Describe the bug
Casal2 is using vector.resize(n, vector[0]) which is actually undefined behaviour.

Release version(s) and/or repository branch(es) affected?
Latest code

Operating system type and version (and build tools types and versions, if applicable)
All

Steps to reproduce the bug
n/a

Expected behavior
The resize and assign methods on vectors should use a value not in the target vector when doing a resize or assign.

Actual behavior
undefined behaviour

Screenshots
n/a

Additional context
Will fix shortly.

Pull requests welcome!
This is an Open Source project - please consider contributing a bug fix
yourself (please read the Contributors Manual and the Contributors Guidelines before starting any work).

[Zaita]

Fixed.