[gnome-shell] extensionDownloader: Fix check for updates with several extensions

[Florian Müllner <fmuellner src gnome org>]

commit f0d2509dc34b88eedba43e4537d0d4e837347d54
Author: Jeremias Ortega <jeremias ortega tech>
Date:   Mon Jul 13 22:38:25 2020 -0600

    extensionDownloader: Fix check for updates with several extensions
    
    When having several extensions installed checking for updates fails.
    This is because we are using GET and query params and since we are
    sending all the metadata of the extension the server returns 502
    when the URL is too long. This error code is ignored safely.
    
    It is only needed to send the version of the extension to check if it
    has updates.
    
    Fixes https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2962
    https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/1363

 js/ui/extensionDownloader.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/js/ui/extensionDownloader.js b/js/ui/extensionDownloader.js
index 90fc5a6161..a7b40f9735 100644
--- a/js/ui/extensionDownloader.js
+++ b/js/ui/extensionDownloader.js
@@ -139,7 +139,9 @@ function checkForUpdates() {
             return;
         if (extension.hasUpdate)
             return;
-        metadatas[uuid] = extension.metadata;
+        metadatas[uuid] = {
+            version: extension.metadata.version,
+        };
     });
 
     if (Object.keys(metadatas).length === 0)