initWithContentsOfURL suddenly gives a "deprecated" error

I just opened my project in the new XCode 4.2 for the first time and I'm suddenly getting a whole slew of these warnings: 'initWithContentsOfURL:' is deprecated

Here's the code - anyone know what needs to be fixed here? (it was working perfectly fine in XCode 4.0)

- (void)viewDidLoad
{

    NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"TermsConditions" withExtension:@"html"];
    NSString *myHtml = [[NSString alloc] initWithContentsOfURL:modelURL];
    [self.TermsWebView loadHTMLString:myHtml baseURL:modelURL];
    [myHtml release];
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}

You need to use the method initWithContentsOfURL:usedEncoding:error:

- (void)viewDidLoad
{ 

    NSURL *modelURL = [[NSBundle mainBundle] URLForResource:@"TermsConditions" withExtension:@"html"];

    NSStringEncoding *encoding;
    NSError *error;

    NSString *myHtml = [[NSString alloc] initWithContentsOfURL:modelURL usedEncoding:&encoding error:&error];
    [self.TermsWebView loadHTMLString:myHtml baseURL:modelURL];
    [myHtml release];
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}