Do not set 'gl' parameter, fixes:
qemu-system-x86_64: Invalid parameter 'gl'

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 ui/spice-app.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ui/spice-app.c b/ui/spice-app.c
index 925b27b708..30541b1022 100644
--- a/ui/spice-app.c
+++ b/ui/spice-app.c
@@ -157,9 +157,10 @@ static void spice_app_display_early_init(DisplayOptions *opts)
     qemu_opt_set(qopts, "addr", sock_path, &error_abort);
     qemu_opt_set(qopts, "image-compression", "off", &error_abort);
     qemu_opt_set(qopts, "streaming-video", "off", &error_abort);
+#ifdef CONFIG_OPENGL
     qemu_opt_set(qopts, "gl", opts->has_gl ? "on" : "off", &error_abort);
     display_opengl = opts->has_gl;
-
+#endif
     be->u.spiceport.data->fqdn = g_strdup("org.qemu.monitor.qmp.0");
     qemu_chardev_new("org.qemu.monitor.qmp", TYPE_CHARDEV_SPICEPORT,
                      be, NULL, &error_abort);
-- 
2.22.0.rc1.1.g079e7d2849.dirty