MJExtension在转模型崩溃

在debug下转成功，在release下崩溃。

#import <Foundation/Foundation.h>
#import "EmployeeM.h"

@interface ColleaguesContractM : NSObject

@property(nonatomic,copy)NSString *ID;
@property(nonatomic,copy)NSString *state;
@property(nonatomic,copy)NSString *employer_id;

@property(nonatomic,strong) EmployeeM *employee;

@end

原因是strong写成了weak，不知道为何在debug下是好的。

@property(nonatomic,weak) EmployeeM *employee;