Fix Spyblock for a api change in v52

1 files changed, 11 insertions, 5 deletions

diff --git a/data/extensions/spyblock@gnu.org/lib/ui.js b/data/extensions/spyblock@gnu.org/lib/ui.js
index 43c770a..6009f9e 100644
--- a/data/extensions/spyblock@gnu.org/lib/ui.js
+++ b/data/extensions/spyblock@gnu.org/lib/ui.js
@@ -657,12 +657,18 @@ let UI = exports.UI =
       // On Linux the list returned will be empty, see bug 156333. Fall back to random order.
       enumerator = Services.wm.getEnumerator(null);
     }
-    while (enumerator.hasMoreElements())
+
+    let generate = function*()
     {
-      let window = enumerator.getNext().QueryInterface(Ci.nsIDOMWindow);
-      if (isKnownWindow(window))
-        yield window;
-    }
+      while (enumerator.hasMoreElements())
+      {
+        let window = enumerator.getNext().QueryInterface(Ci.nsIDOMWindow);
+        if (isKnownWindow(window))
+          yield window;
+      }
+    };
+
+    return generate();
   },
 
   /**