fix crash on click ss url

1) fix typo causing crash on click ss url
2) update ss-local using a 10.10 compiled should not crash on 10.11
3) remove useless code

ShadowsocksX-NG/AppDelegate.swift

@@ -717,7 +717,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
                 NotificationCenter.default.post(
                     name: Notification.Name(rawValue: "NOTIFY_FOUND_SS_URL"), object: nil
                     , userInfo: [
-                        "ruls": [url],
+                        "urls": [url],
                         "source": "url",
                     ])
             }

ShadowsocksX-NG/Utils.m

@@ -156,7 +156,6 @@ NSDictionary<NSString *, id>* ParseSSURL(NSURL* url) {
         urlString = [urlString stringByReplacingOccurrencesOfString:@"ssr://" withString:@"" options:NSAnchoredSearch range:NSMakeRange(0, urlString.length)];
 //        NSData *data = [[NSData alloc] initWithBase64EncodedString:urlString options:0];
         NSString *decodedString = decode64(urlString);//[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
-        urlString = decodedString;
         if ([decodedString isEqual: @""]) {
             [[NSNotificationCenter defaultCenter]
              postNotificationName:@"NOTIFY_INVALIDE_QR"