Reduce use of downcast<>() in ReferencedSVGResources.cpp#22740

webkit-commit-queue merged 1 commit intoWebKit:mainWebKit/WebKit:mainfrom

cdumez:267482_ReferencedSVGResources_fewer_downcastcdumez/WebKit:267482_ReferencedSVGResources_fewer_downcastCopy head branch name to clipboard