Added check after going through gtk_events.

src/window.cc

@@ -650,6 +650,7 @@ void Window::goto_line_entry() {
             buffer->place_cursor(buffer->get_iter_at_line(line));
             while(gtk_events_pending())
               gtk_main_iteration();
+            if(notebook.get_current_page()!=-1)
               notebook.get_current_view()->scroll_to(buffer->get_insert(), 0.0, 1.0, 0.5);
           }
         }