[gtk/wip/chergert/glproto] make it clear the size requirements for array_count

[Christian Hergert <chergert src gnome org>]

commit 5903196ffd70d78d99137cd859dcf8eff066e46c
Author: Christian Hergert <chergert redhat com>
Date:   Wed Feb 17 09:57:01 2021 -0800

    make it clear the size requirements for array_count

 gsk/next/gskglrenderjob.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gsk/next/gskglrenderjob.c b/gsk/next/gskglrenderjob.c
index 29d427b57f..57956ebd6c 100644
--- a/gsk/next/gskglrenderjob.c
+++ b/gsk/next/gskglrenderjob.c
@@ -49,6 +49,9 @@
 #define MAX_GRADIENT_STOPS  6
 #define SHADOW_EXTRA_SIZE   4
 
+/* Make sure gradient stops fits in packed array_count */
+G_STATIC_ASSERT (MAX_GRADIENT_STOPS*5 < (1<<5));
+
 #define rounded_rect_top_left(r)                                                        \
   (GRAPHENE_RECT_INIT(r->bounds.origin.x,                                               \
                       r->bounds.origin.y,                                               \