[PATCH] gdiplus: Initialize the dead point coordinates in "GpPointF, *ptf" to 0.

[Esme Povirk (they/them)]

This seems like it may be hiding a bug somewhere else. Where do these
nans come from?

[Esme Povirk (they/them)]

Signed-off-by: Esme Povirk <esme(a)codeweavers.com>