Avoid copying range and consuming tokens from this copied range in CSSVariableData(). We can simply iterate over the provided range, no need to copy or consume.
Pull request: https://github.com/WebKit/WebKit/pull/17511
Committed 267712@main (5e7400cc3d50): <https://commits.webkit.org/267712@main> Reviewed commits have been landed. Closing PR #17511 and removing active labels.
<rdar://problem/115089504>