* fixed a bug in item archiving preferences window (the notes in sections 2.2.2.2 and 2.2.3.3 in XEP-0136 say when we change OTR to 'require' we must change save value to 'false')

data/glade/item_archiving_preferences_window.glade

@@ -47,6 +47,7 @@ forbid
 oppose
 prefer
 require</property>
+                <signal name="changed" handler="on_otr_combobox_changed"/>
               </widget>
               <packing>
                 <property name="left_attach">1</property>

src/dialogs.py

@@ -2894,6 +2894,11 @@ class ItemArchivingPreferencesWindow:
 			return True
 		return False
 
+	def on_otr_combobox_changed(self, widget):
+		otr = self.otr_name[self.otr_combobox.get_active()]
+		if otr == 'require':
+			self.save_combobox.set_active(self.save_index['false'])
+
 	def on_ok_button_clicked(self, widget):
 		# Return directly if operation in progress
 		if self.waiting: