Fixes the SDXL pipeline loading from single file

[iamwavecut]

What does this PR do?

Allows using from_single_file by StableDiffusionXLPipeline.

Original config of SDXL 0.9 model does not define a section for controlnet, but the script assumes it is. I believe it was a recent typo, as it assigns a variable with the boolean expression result, and then instantly overrides it with load attempt, ignoring the boolean. Loading controlnet without config fails.

Fixes # (issue)
Unable to find the exact issue. Didn't create it myself.

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Who can review?

@patrickvonplaten
@sayakpaul
@williamberman

[iamwavecut]

@patrickvonplaten
@sayakpaul
@williamberman

please, review

[williamberman]

hey @iamwavecut could you open the pull request against the main diffusers repo?

[iamwavecut]

Oh sorry my bad

[patrickvonplaten]

Hey @iamwavecut,

Sorry we fixed this just 6 hours ago here: huggingface@b7a6e34

[iamwavecut]

No probs, I just woke up