PassKit iOS 12.2 Beta 4 to GM API Differences

PKDisbursementAuthorizationController.h
Modified -[PKDisbursementAuthorizationController initWithDisbursementRequest:delegate:]
Declaration
From- (nonnull instancetype)initWithDisbursementRequest:(nonnull PKDisbursementRequest *)disbursementRequest delegate:(nonnull id<PKDisbursementAuthorizationControllerDelegate>)delegate
To- (nullable instancetype)initWithDisbursementRequest:(nonnull PKDisbursementRequest *)disbursementRequest delegate:(nonnull id<PKDisbursementAuthorizationControllerDelegate>)delegate