Update source/dest earlier in the workflow

Addresses issue #219

scripts/wk/clone/ddrescue.py

@@ -640,6 +640,7 @@ class State():
 
     # Select source
     self.source = select_disk_obj('source', disk_menu, docopt_args['<source>'])
+    self.update_top_panes()
     if self.source.trim:
       cli.print_warning('Source device supports TRIM')
       if not cli.ask('  Proceed with recovery?'):
@@ -660,6 +661,7 @@ class State():
       else:
         self.destination = menus.select_path('Destination')
       self.ui.add_title_pane('Destination', self.destination)
+    self.update_top_panes()
 
     # Update details
     self.source.update_details(skip_children=False)