Reporter: LonelyPixel
[Submitted to the original trac issue database at 7.04pm, Friday, 9th January 2009]

Very small thing: If a node is rendered with an icon, as defined by the
current style, there's still that grey 4 by 4 pixels dot under the icon.
If the icon is transparent in the centre, you see that dot through it.
This patch removes the dot if an icon is drawn. Makes circle-shaped
icons with a hole more pleasing to look at. :)