[gnote] Remove Glib deprecations from print notes

[Aurimas Černius <aurimasc src gnome org>]

commit 9f1c05561943020e25d0fe57e9aaf4fbf0bb7d43
Author: Aurimas Černius <aurisc4 gmail com>
Date:   Mon May 3 23:10:10 2021 +0300

    Remove Glib deprecations from print notes

 src/plugins/printnotes/printnotesnoteaddin.cpp | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/src/plugins/printnotes/printnotesnoteaddin.cpp b/src/plugins/printnotes/printnotesnoteaddin.cpp
index d9622b60..088ce1fe 100644
--- a/src/plugins/printnotes/printnotesnoteaddin.cpp
+++ b/src/plugins/printnotes/printnotesnoteaddin.cpp
@@ -73,7 +73,7 @@ namespace printnotes {
 
       Glib::RefPtr<Gtk::PrintSettings> settings = Gtk::PrintSettings::create();
 
-      Glib::ustring dir = Glib::get_user_special_dir (G_USER_DIRECTORY_DOCUMENTS);
+      Glib::ustring dir = Glib::get_user_special_dir(Glib::USER_DIRECTORY_DOCUMENTS);
       if (dir.empty()) {
         dir = Glib::get_home_dir();
       }
@@ -111,7 +111,7 @@ namespace printnotes {
                                          e.what());
       dlg.run ();
     }
-    m_print_op.clear(); // yeah I really mean clear the pointer.
+    m_print_op.reset();
   }
 
 
@@ -490,8 +490,7 @@ namespace printnotes {
   void PrintNotesNoteAddin::on_end_print(const Glib::RefPtr<Gtk::PrintContext>&)
   {
     m_page_breaks.clear ();
-    // clear the RefPtr<>
-    m_timestamp_footer.clear();
+    m_timestamp_footer.reset();
   }
 
 }