capture non-whitespace chars for ss url tag

shadowsocks-csharp/Model/Server.cs

@@ -11,7 +11,7 @@ namespace Shadowsocks.Model
     public class Server
     {
         public static readonly Regex
-            UrlFinder = new Regex(@"ss://(?<base64>[A-Za-z0-9+-/=_]+)(?:#(?<tag>.+))?", RegexOptions.IgnoreCase),
+            UrlFinder = new Regex(@"ss://(?<base64>[A-Za-z0-9+-/=_]+)(?:#(?<tag>\S+))?", RegexOptions.IgnoreCase),
             DetailsParser = new Regex(@"^((?<method>.+?):(?<password>.*)@(?<hostname>.+?):(?<port>\d+?))$", RegexOptions.IgnoreCase);
 
         private const int DefaultServerTimeoutSec = 5;