Fixed bug in asset button image loading

If loading a file for one of the states of the asset button failed
we would call close on an undefined object, which caused a crash.
[endlessm/eos-sdk#390]

1 files changed, 3 insertions, 2 deletions

diff --git a/overrides/endless_private/asset_button.js b/overrides/endless_private/asset_button.js
index b1cee97..594581e 100644
--- a/overrides/endless_private/asset_button.js
+++ b/overrides/endless_private/asset_button.js
@@ -137,7 +137,7 @@ const AssetButton = new Lang.Class({
 
         if(this[uri_property] === uri)
             return;
-        let img_stream;
+        let img_stream = null;
         try {
             img_stream = this._open_stream_from_uri(uri);
             this[pixbuf_property] = GdkPixbuf.Pixbuf.new_from_stream(img_stream, null);
@@ -147,7 +147,8 @@ const AssetButton = new Lang.Class({
             this[pixbuf_property] = null;
             this[uri_property] = null;
         }
-        img_stream.close(null);
+        if (img_stream !== null)
+            img_stream.close(null);
         this._update_appearance();
         this.notify(state + '-image-uri');
     }