libgnt/libgnt

Remove volatile from GntBindable registration.

2021-05-26, Elliott Sales de Andrade
81827d41b859
Remove volatile from GntBindable registration.

This causes a warning with GLib 2.67 and GCC 11.

Testing Done:
Compiled and saw no warnings.

Reviewed at https://reviews.imfreedom.org/r/674/
#include <gnt.h>
int main()
{
GntWidget *win, *button;
gnt_init();
gnt_util_parse_widgets("<vwindow id='0' fill='0' align='2'><label>This is a test.</label><button id='1'>OK</button></vwindow>", 2, &win, &button);
g_signal_connect_swapped(G_OBJECT(button), "activate", G_CALLBACK(gnt_widget_destroy), win);
gnt_widget_show(win);
gnt_main();
gnt_quit();
return 0;
}