Document::recalcStyle() at one point verifies that a renderer is present or bails out ('goto bail_out'). The code after that still contains a redundant check "if (renderer() && ..." that can be removed.
Created attachment 95727 [details] Patch
Comment on attachment 95727 [details] Patch ok
Committed r87879: <http://trac.webkit.org/changeset/87879>