wined3d: Don't leave leftover textures when destroying and creating dxgi swapchains.

dlls/wined3d/swapchain.c

@@ -42,6 +42,7 @@ static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
      * is the last buffer to be destroyed, FindContext() depends on that. */
     if (swapchain->front_buffer)
     {
+        if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_SWAPCHAIN)
             surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
         if (wined3d_surface_decref(swapchain->front_buffer))
             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
@@ -54,6 +55,7 @@ static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
 
         while (i--)
         {
+            if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_SWAPCHAIN)
                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
             if (wined3d_surface_decref(swapchain->back_buffers[i]))
                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
@@ -917,6 +919,7 @@ static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_
         goto err;
     }
 
+    if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_NONE)
         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
@@ -1025,7 +1028,7 @@ static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_
                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
                 goto err;
             }
-
+            if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_NONE)
                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
         }
     }