Flatpak: add broadway variable type fix patch

pkgs/flatpak/lib/gtk4-broadway-fix-unsafe-variable-type.patch

@@ -0,0 +1,26 @@
+From c6320cfd75c65bfb1736b7ca5afc9c0f5ffc09d7 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Dzi=C4=99giel?= <rafostar.github@gmail.com>
+Date: Thu, 25 Feb 2021 09:45:38 +0100
+Subject: [PATCH] Broadway: fix unsafe variable type
+
+Only guint32 guarantees to be always 32bit on all platforms. Mixing 32bit and 64bit memory sizes leads to a crash.
+---
+ gdk/broadway/gdkbroadway-server.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/gdk/broadway/gdkbroadway-server.c b/gdk/broadway/gdkbroadway-server.c
+index 02b6f93183..e6b96ff0b9 100644
+--- a/gdk/broadway/gdkbroadway-server.c
++++ b/gdk/broadway/gdkbroadway-server.c
+@@ -235,7 +235,7 @@ static void
+ parse_all_input (GdkBroadwayServer *server)
+ {
+   guint8 *p, *end;
+-  size_t size;
++  guint32 size;
+   BroadwayReply *reply;
+ 
+   p = server->recv_buffer;
+-- 
+2.26.2
+

pkgs/flatpak/lib/gtk4.json

@@ -24,6 +24,10 @@
         {
             "type": "patch",
             "path": "gtk4-popover-unrealize.patch"
+        },
+        {
+            "type": "patch",
+            "path": "gtk4-broadway-fix-unsafe-variable-type.patch"
         }
     ]
 }