Use HashMap::ensure() in FontCascadeFonts::glyphDataForCharacter() instead of adding a "null" value and then checking if the value is null. This simplifies the code a bit and may be a little more efficient.
Pull request: https://github.com/WebKit/WebKit/pull/18524
Committed 268805@main (84766e172527): <https://commits.webkit.org/268805@main> Reviewed commits have been landed. Closing PR #18524 and removing active labels.
<rdar://problem/116427050>