proper set_menu_format retval check

graph_browser.cpp

@@ -113,9 +113,7 @@ void GraphBrowser::initLayout()
   menu_subwindow_ = derwin(current_win_, window_height-2, current_window_width-2, 1, 1);
   assert(menu_subwindow_);
   r = set_menu_sub(menu_, menu_subwindow_);
-  assert(r == E_OK);
-  r = set_menu_format(menu_, window_height-2, 1);
-  assert(r == E_OK); // @bug NOT connected
+  assert(r == E_NOT_CONNECTED); // No items are connected to the menu.
   r = set_menu_mark(menu_, " ");
   assert(r == E_OK);
 
@@ -152,9 +150,8 @@ void GraphBrowser::initLayout()
   r = wrefresh(n_of_n_win_);
   assert(r == OK);
 
-  // bottom text
-  /// @note should we assert as a minimum width?
-  mvprintw(term_max_y_-1, 0, "ESC:exit, cursors:navigate, d/i:del/ins edge, D/I:del/ins node");
+  r = mvprintw(term_max_y_-1, 0, "ESC:exit, cursors:navigate, d/i:del/ins edge, D/I:del/ins node");
+  assert(r == OK);
   r = refresh();
   assert(r == OK);
 }