d3d10umd: stop using pipe_surface::width/height

these were deleted months ago

Fixes: 9d359c6d10 ("gallium: delete pipe_surface::width and pipe_surface::height")

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35236>

src/gallium/frontends/d3d10umd/OutputMerger.cpp

@@ -236,8 +236,8 @@ ClearRenderTargetView(D3D10DDI_HDEVICE hDevice,                      // IN
                              surface,
                              &clear_color,
                              0, 0,
-                             surface->width,
-                             surface->height,
+                             pipe_surface_width(surface),
+                             pipe_surface_height(surface),
                              true);
 }
 
@@ -385,8 +385,8 @@ ClearDepthStencilView(D3D10DDI_HDEVICE hDevice,                      // IN
                              Depth,
                              Stencil,
                              0, 0,
-                             surface->width,
-                             surface->height,
+                             pipe_surface_width(surface),
+                             pipe_surface_height(surface),
                              true);
 }