DepotDownloader: Correct build issue.

DepotDownloader/ContentDownloader.cs

@@ -383,7 +383,7 @@ namespace DepotDownloader
                         Config.BetaPassword = password = Console.ReadLine();
                     }
 
-                    byte[] input = Utils.DecodeHexString(node_encrypted["encrypted_gid"].Value);
+                    byte[] input = Util.DecodeHexString(node_encrypted["encrypted_gid"].Value);
                     byte[] manifest_bytes = CryptoHelper.VerifyAndDecryptPassword(input, password);
 
                     if (manifest_bytes == null)

DepotDownloader/Util.cs

@@ -167,5 +167,19 @@ namespace DepotDownloader
 
             return output;
         }
+
+        public static byte[] DecodeHexString( string hex )
+        {
+            if ( hex == null )
+                return null;
+
+            int chars = hex.Length;
+            byte[] bytes = new byte[ chars / 2 ];
+
+            for ( int i = 0 ; i < chars ; i += 2 )
+                bytes[ i / 2 ] = Convert.ToByte( hex.Substring( i, 2 ), 16 );
+
+            return bytes;
+        }
     }
 }