Crash on SVG file open (GTK file preview of certain size documents)
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#### Steps to reproduce:
- Open Inkscape
- Make sure GTK open dialog is set (default)
- Go to the Open dialog
- Make sure preview is enabled
- Select [bnp-paribas.svg](/uploads/efa8efbe8f8468b917183d20d07ed521/bnp-paribas.svg)
#### What happened?
Inkscape crashes with Internal error message box on screen.
#### Minimal examples
Crash: `<svg viewBox="0 0 250 250" />`
Doesn't crash: `<svg viewBox="0 0 1366 768" />` and `<svg viewBox="0 0 252 250" />`
#### What should have happened?
Open the file successfully
[backtrace](https://gitlab.com/inkscape/inkscape/uploads/0805a3082f307f714e48b0be5c25f164/inkscape_backtrace.txt)
#### Inkscape Version and Operating System:
- Inkscape Version: 1.1-dev (ffe8a26, 2020-05-19)
- Operating System: Win7
- Operating System version: 6.1, build 7601
issue