Add escape hatch if rarch (or the core) is in an infinite loop.

gfx/common/egl_common.c

@@ -172,6 +172,7 @@ void egl_get_video_size(void *data, unsigned *width, unsigned *height)
 static void egl_sighandler(int sig)
 {
    (void)sig;
+   if (g_egl_quit) exit(1);
    g_egl_quit = 1;
 }
 

gfx/common/x11_common.c

@@ -504,6 +504,7 @@ bool x11_has_focus(void *data)
 static void x11_sighandler(int sig)
 {
    (void)sig;
+   if (g_x11_quit) exit(1);
    g_x11_quit = 1;
 }
 

gfx/drivers_context/drm_ctx.c

@@ -91,6 +91,7 @@ struct drm_fb
 static void drm_sighandler(int sig)
 {
    (void)sig;
+   if (drm_quit) exit(1);
    drm_quit = 1;
 }
 

gfx/drivers_context/wayland_ctx.c

@@ -83,6 +83,7 @@ static enum gfx_ctx_api wl_api;
 static void wl_sighandler(int sig)
 {
    (void)sig;
+   if (wl_quit) exit(1);
    wl_quit = 1;
 }