Fixed crash caused by continuous calls to "setCustomView:" method

[liLeiBest]

UIImage *img = [UIImage imageNamed:@"hub_warning_icon"];
UIImageView *customView = [[UIImageView alloc] initWithImage:img];
for (NSUInteger i = 0; i < 2; i++) {

    MBProgressHUD *hud = [self toastToView:self.view];
    hud.mode = MBProgressHUDModeCustomView;
    [hud setCustomView:customView];
    hud.label.text = @"Title";
    hud.detailsLabel.text = @"Content";
    [hud hideAnimated:YES afterDelay:2];
}

The above code will crash, and the log is as follows:

Thread 1: "Unable to install constraint on view. Does the constraint reference something from outside the subtree of the view? That's illegal. constraint:<NSLayoutConstraint:0x600003178870 UIImageView:0x151007950.centerX == MBBackgroundView:0x14fe48390.centerX (active)> view:<MBBackgroundView: 0x14fe48390; frame = (0 0; 0 0); clipsToBounds = YES; animations = { opacity=<CASpringAnimation: 0x600001258160>; }; layer = <CALayer: 0x600001260c60>>"