[simple-scan] Change formatting of scan_button.sensitive set

[Bartosz <bkosiorek src gnome org>]

commit d6dbee80485dcc23e27a705c4097146b2b75bec6
Author: Bartosz Kosiorek <gang65 poczta onet pl>
Date:   Wed Apr 22 13:37:11 2020 +0200

    Change formatting of scan_button.sensitive set

 src/app-window.vala | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/app-window.vala b/src/app-window.vala
index 0348160..c316bb0 100644
--- a/src/app-window.vala
+++ b/src/app-window.vala
@@ -246,7 +246,7 @@ public class AppWindow : Gtk.ApplicationWindow
 
     private void update_scan_status ()
     {
-        scan_button.set_sensitive(false);
+        scan_button.sensitive = false;
         if (!have_devices)
         {
             status_primary_label.set_text (/* Label shown when searching for scanners */
@@ -256,7 +256,7 @@ public class AppWindow : Gtk.ApplicationWindow
         }
         else if (get_selected_device () != null)
         {
-            scan_button.set_sensitive(true);
+            scan_button.sensitive = true;
             status_primary_label.set_text (/* Label shown when detected a scanner */
                                            _("Ready to Scan"));
             status_secondary_label.set_text (get_selected_device_label ());