Easier way to create a UIViewAutoresizing mask

SDUtils.h

// the last param must be NSNotFound
+ (UIViewAutoresizing)autoresizeWithMask:(UIViewAutoresizing)firstMask, ... {
    va_list args;
    va_start(args, firstMask);
    UIViewAutoresizing autoresizingMask = UIViewAutoresizingNone;
    for (UIViewAutoresizing nextMask = firstMask; nextMask != NSNotFound; nextMask = va_arg(args, UIViewAutoresizing)) {
        autoresizingMask |= nextMask;
    }
    va_end(args);
    return autoresizingMask;
}