demos: Set depth image aspect correctly
diff --git a/demos/cube.c b/demos/cube.c
index 160b33f..bbbb9da 100644
--- a/demos/cube.c
+++ b/demos/cube.c
@@ -834,7 +834,7 @@
         .image.handle = VK_NULL_HANDLE,
         .format = depth_format,
         .subresourceRange = {
-            .aspect = VK_IMAGE_ASPECT_COLOR,
+            .aspect = VK_IMAGE_ASPECT_DEPTH,
             .baseMipLevel = 0,
             .mipLevels = 1,
             .baseArraySlice = 0,