wined3d: Properly handle backbuffer_width/_height=0 in wined3d_device_reset. (try 3)

[Sam Edwards]

This patch differs from try 2 in formatting alone.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-wined3d-Properly-handle-backbuffer_width-_height-0-i.patch
Type: text/x-patch
Size: 7689 bytes
Desc: not available
URL: <http://www.winehq.org/pipermail/wine-patches/attachments/20130406/bba06e46/attachment.bin>