frontends/gtk/download.c: In function ‘gui_download_window_create’:
frontends/gtk/download.c:829:10: warning: cast between incompatible function types from ‘gboolean (*)(gboolean)’ {aka ‘int (*)(int)’} to ‘gboolean (*)(void *)’ {aka ‘int (*)(void *)’} [-Wcast-function-type]
(GSourceFunc) nsgtk_download_update, FALSE);
^