rem: for (i = 0; i < num_monitors; ++i) { if (!glgfx_monitor_waittof(monitors[i])) {
add: for (i = 0; i < glgfx_num_monitors; ++i) { if (!glgfx_monitor_waittof(glgfx_monitors[i])) {
context: bool glgfx_waittof(void) {  bool rc = true;  int i;  for (i = 0; i < num_monitors; ++i) {    if (!glgfx_monitor_waittof(monitors[i])) {      rc = false;    }  }  return rc;}