Fix clippy error

[svix-jplatte]

Summary

Fixes the unrelated clippy error that makes CI unhappy in #271.

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[svix-jplatte]

Oh, a CLA. Does this need to be signed even for a clearly non-copyrightable change (I didn't even delete these characters myself, that was clippy's --fix mode 😄)?

[slvrtrn]

Closing this cause I pushed the fix without noticing this (sorry!).

Oh, a CLA. Does this need to be signed even for a clearly non-copyrightable change (I didn't even delete these characters myself, that was clippy's --fix mode 😄)?

That's a question to the legal team, but I'd prefer not to merge any PRs without it signed.