Cannot enlarge or shrink when `pdf-view-auto-slice-minor-mode` is enabled

[IceAsteroid]

Describe the bug
When pdf-view-auto-slice-minor-mode is enabled in pdf-view-mode for a pdf buffer, pdf-view-enlarge and pdf-view-shrink don't work and incur an error error "Invalid image specification".

Is this a normal behavior?

Steps to Reproduce the behaviour

1. Open a pdf under pdf-view-mode with pdf-view-auto-slice-minor-mode enabled.
2. Execute pdf-view-enlarge or pdf-view-shrink.

With toggle-debug-on-error enabled, the debugger outputs:

Debugger entered--Lisp error: (error "Invalid image specification")
  pdf-view-image-size()
  pdf-view-enlarge(1.25)
  funcall-interactively(pdf-view-enlarge 1.25)
  command-execute(pdf-view-enlarge record)
  execute-extended-command(nil "pdf-view-enlarge" "enlarge ")
  funcall-interactively(execute-extended-command nil "pdf-view-enlarge" "enlarge ")
  command-execute(execute-extended-command)

What is the expected behaviour?
Properly scale the pdf buffer.

Desktop

• OS: ArchLinux
• Emacs Version: GNU Emacs 30.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.52, cairo version 1.18.4)
• Package Manager Version: Pacman v7.1.0 - libalpm v16.0.1

Your pdf-tools install

• pdf-tools Version:

Package pdf-tools is installed.

     Status: Installed in ‘pdf-tools-20260102.1101/’ (unsigned). Delete
    Version: 20260102.1101
     Commit: e4b7f1f37cf59ddf025d609ffcdabe732a6e99ba
    Summary: Support library for PDF documents.
   Requires: emacs-26.3, tablist-1.0, let-alist-1.0.4
    Website: https://github.com/vedang/pdf-tools/
   Keywords: files multimedia 
     Author: Andreas Politz <mail@andreas-politz.de>
Other versions: 20260102.1101 (melpa), 1.3.0 (nongnu), 1.3.0 (melpa-stable).

• pdf-tools customization / configuration that you use
  This also happens without customization or configuration in vanilla emacs, only with pdf-view-auto-slice-minor-mode enabled.

[aikrahguzar]

I cannot reproduce this so I think this fixed in #338, if possible please try that PR and report back.

[IceAsteroid]

Your PR indeed solved the problem. Thank you so much, Aikrahguzar!