[gnome] Update extensions

gnome/.local/share/gnome-shell/extensions/appindicatorsupport@rgcjonas.gmail.com/iconTheme.js

@@ -0,0 +1,12 @@
+let _defaultTheme;
+export function getDefaultTheme() {
+    if (_defaultTheme)
+        return _defaultTheme;
+
+    _defaultTheme = new St.IconTheme();
+    return _defaultTheme;
+}
+
+export function destroyDefaultTheme() {
+    _defaultTheme = null;
+}