Fix ugly error at startup due to clip model loading.

[Ph0rk0z]

Description

I have a problem with both dev and master where the clip model loading errors out here and proceeds to download the pickle anyway.

Once you have d/l the model it never stops making this error because this doesn't really disable anything, it just makes it load the "slow" way.

see:
#13245

It may not save you from downloading the 2 clip models for both SD and SDXL but at least it stops the command line from spamming every time I run SD.

If anyone has a better fix to prevent CLIP model loading entirely...

Checklist:

• I have read contributing wiki page
• I have performed a self-review of my own code
• My code follows the style guidelines
• My code passes tests

[AUTOMATIC1111]

This line changed is meant to prevent the download, and it is working for me - the change would cause the model to be downloaded. Until I can reproduce the problem, I can't fix it.

[Ph0rk0z]

I think for me it happens due to repositories/stability-ai. Even when it fails due to this line, it still finds another way to d/l the clip models.

[AUTOMATIC1111]

closing because I can't reproduce the problem; reopen if there's more

[Ph0rk0z]

Yea.. it still does it for me. I am greeted every time by this message when loading the UI.