As part of redoing all the image bases for https://bugs.webkit.org/show_bug.cgi?id=21821, we noticed svg/W3C-SVG-1.1/pservers-grad-17-b.svg is failing on Leopard but not on Tiger
should be fixed with the patch on https://bugs.webkit.org/show_bug.cgi?id=20543
fixed with r38952