[gnome-shell] extensionSystem: Disable extension before unloading stylesheet

[Florian Müllner <fmuellner src gnome org>]

commit 6d5e93b00b5b4ce5315276e071a98c8db5ff6463
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed May 13 20:10:56 2020 +0200

    extensionSystem: Disable extension before unloading stylesheet
    
    Removing a stylesheet from the theme will trigger a style update. There's
    little point in updating the extension actors that are about to be destroyed
    (hopefully), so call the extension's disable() function first.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/2757

 js/ui/extensionSystem.js | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)
---
diff --git a/js/ui/extensionSystem.js b/js/ui/extensionSystem.js
index 1a34f19e9e..5a50b473ac 100644
--- a/js/ui/extensionSystem.js
+++ b/js/ui/extensionSystem.js
@@ -102,18 +102,18 @@ var ExtensionManager = class {
             }
         }
 
-        if (extension.stylesheet) {
-            let theme = St.ThemeContext.get_for_stage(global.stage).get_theme();
-            theme.unload_stylesheet(extension.stylesheet);
-            delete extension.stylesheet;
-        }
-
         try {
             extension.stateObj.disable();
         } catch (e) {
             this.logExtensionError(uuid, e);
         }
 
+        if (extension.stylesheet) {
+            let theme = St.ThemeContext.get_for_stage(global.stage).get_theme();
+            theme.unload_stylesheet(extension.stylesheet);
+            delete extension.stylesheet;
+        }
+
         for (let i = 0; i < order.length; i++) {
             let otherUuid = order[i];
             try {