call glutInit(), bug 11486
diff --git a/progs/demos/gltestperf.c b/progs/demos/gltestperf.c
index be95390..2188b02 100644
--- a/progs/demos/gltestperf.c
+++ b/progs/demos/gltestperf.c
@@ -569,6 +569,7 @@
    if (ac == 2)
       frontbuffer = 0;
 
+   glutInit(&ac, av);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
    glutInitWindowPosition(0, 0);
    glutInitWindowSize(640, 480);