Don't consume into block in ConsumeFontFaceUnicodeRange
Fixes crash for e.g. unicode-range:().
Bug: 40941162
Change-Id: I0422a0323418899ab23366359db075d15419a630
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5860245
Reviewed-by: Steinar H Gunderson sesse@chromium.org
Commit-Queue: Anders Hartvoll Ruud andruud@chromium.org
Cr-Commit-Position: refs/heads/main@{#1355446}