wined3d: Make the device parameter to wined3d_device_get_texture() const.

dlls/wined3d/device.c

@@ -3863,7 +3863,7 @@ HRESULT CDECL wined3d_device_set_texture(struct wined3d_device *device,
     return WINED3D_OK;
 }
 
-HRESULT CDECL wined3d_device_get_texture(struct wined3d_device *device,
+HRESULT CDECL wined3d_device_get_texture(const struct wined3d_device *device,
         UINT stage, struct wined3d_texture **texture)
 {
     TRACE("device %p, stage %u, texture %p.\n", device, stage, texture);

include/wine/wined3d.h

@@ -2256,7 +2256,7 @@ HRESULT __cdecl wined3d_device_get_surface_from_dc(struct wined3d_device *device
 HRESULT __cdecl wined3d_device_get_swapchain(const struct wined3d_device *device,
         UINT swapchain_idx, struct wined3d_swapchain **swapchain);
 UINT __cdecl wined3d_device_get_swapchain_count(const struct wined3d_device *device);
-HRESULT __cdecl wined3d_device_get_texture(struct wined3d_device *device,
+HRESULT __cdecl wined3d_device_get_texture(const struct wined3d_device *device,
         UINT stage, struct wined3d_texture **texture);
 HRESULT __cdecl wined3d_device_get_texture_stage_state(const struct wined3d_device *device,
         UINT stage, WINED3DTEXTURESTAGESTATETYPE state, DWORD *value);