Fix for rendering issues when calling GetDepthStencilSurface

[Andrew Fenn]

When IWineD3DDevice_GetDepthStencilSurface returns WINED3DERR_NOTFOUND
it was setting ppZStencilSurface to null. This was the cause of
rendering issues with the 3d models in spore.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 0001-Don-t-clear-ppZStencilSurface-if-not-found.patch
Type: text/x-diff
Size: 789 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20080829/42b53bb2/attachment.patch