添加注释

GMPhobos/Classes/PhobosUtil.m

@@ -120,8 +120,8 @@
         [request setValue:@"gzip" forHTTPHeaderField:@"Content-Encoding"];
         request.HTTPBody = data;
         request.HTTPMethod = @"POST";
+        // sendAsynchronousRequest 在iOS9以后y被废除了
         NSURLSession *session = [NSURLSession sharedSession];
-        __block  NSString *result = @"";
         NSURLSessionDataTask *dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) {
             if (!error) {
                 //没有错误，返回正确；