mbostock/d3 — pull request #465 by conorbranagan (2012-01-24 20:00:24+00:00)
Title: Always give width/height attribute to background rect from brush component

When using the brush component for just the x-axis or just the y-axis, a width or height attribute will be not be given on the background rect and this was causing parse errors in the SVG rasterizer. The fix just adds a default height/width of 0 for all cases, one or both of which will get overwritten later on.