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

dlls/wined3d/context.c

@@ -626,7 +626,7 @@ static void context_detach_fbo_entry(struct wined3d_context *context, struct fbo
     entry->attached = FALSE;
 }
 
-void context_resource_unloaded(struct wined3d_device *device,
+void context_resource_unloaded(const struct wined3d_device *device,
         struct wined3d_resource *resource, WINED3DRESOURCETYPE type)
 {
     switch (type)

dlls/wined3d/wined3d_private.h

@@ -1238,7 +1238,7 @@ DWORD context_get_tls_idx(void) DECLSPEC_HIDDEN;
 void context_release(struct wined3d_context *context) DECLSPEC_HIDDEN;
 void context_resource_released(const struct wined3d_device *device,
         struct wined3d_resource *resource, WINED3DRESOURCETYPE type) DECLSPEC_HIDDEN;
-void context_resource_unloaded(struct wined3d_device *device,
+void context_resource_unloaded(const struct wined3d_device *device,
         struct wined3d_resource *resource, WINED3DRESOURCETYPE type) DECLSPEC_HIDDEN;
 BOOL context_set_current(struct wined3d_context *ctx) DECLSPEC_HIDDEN;
 void context_set_draw_buffer(struct wined3d_context *context, GLenum buffer) DECLSPEC_HIDDEN;