[gtk: 2/8] broadway: Fix image updates for firefox

[Matthias Clasen <matthiasc src gnome org>]

commit a4b718da4ebf7854e91b2a4c6e833db44caa6aff
Author: Alexander Larsson <alexl redhat com>
Date:   Fri Mar 13 08:10:41 2020 +0100

    broadway: Fix image updates for firefox
    
    For whatever reason we need to assign the function to a variable
    to be able to call it.

 gdk/broadway/broadway.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gdk/broadway/broadway.js b/gdk/broadway/broadway.js
index 793aa56bea..2478aacc7c 100644
--- a/gdk/broadway/broadway.js
+++ b/gdk/broadway/broadway.js
@@ -997,12 +997,13 @@ function handleDisplayCommands(display_commands)
         case DISPLAY_OP_CHANGE_TEXTURE:
             var image = cmd[1];
             var texture = cmd[2];
-            // We need a new closure here to have a separate copy of "template" for each iteration...
-            function a_block(t) {
+            // We need a new closure here to have a separate copy of "texture" for each iteration in the 
onload callback...
+            var block = function(t) {
                 image.src = t.url;
                 // Unref blob url when loaded
                 image.onload = function() { t.unref(); };
-            }(texture);
+            };
+            block(texture);
             break;
         case DISPLAY_OP_CHANGE_TRANSFORM:
             var div = cmd[1];