Wrong year if currentCalendar is NOT gregorian

[nickbit]

Please check this situation since this returns invalid dates.
Expiration dates in credit card is in gregorian calendar.

To replicate just change the calendar in the settings to Japanese for example.

[nickbit]

Here is the change I made to the code in order to get it right

+ (NSInteger)currentYear
{
    static NSCalendar *__calendarToUse = nil;
    if (__calendarToUse == nil) {
        __calendarToUse = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
    }
    NSDateComponents *currentDateComponents = [__calendarToUse components:NSYearCalendarUnit fromDate:[NSDate date]];
    return currentDateComponents.year;
}