'NSData dataWithContentsOfURL:'内存泄漏ios9.x ?

My code is the following:

我的代码如下:

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSString *theURLString = @"https://website.com/musicFile";
    NSData *theData = [NSData dataWithContentsOfURL:[NSURL URLWithString:theURLString]];
}
- (void)v