fix updater

i feel dumb

EnvyUpdate/EnvyUpdate.csproj

@@ -75,6 +75,7 @@
       <SubType>Designer</SubType>
     </ApplicationDefinition>
     <Compile Include="Notify.cs" />
+    <Compile Include="StringExt.cs" />
     <Compile Include="Util.cs" />
     <Page Include="MainWindow.xaml">
       <Generator>MSBuild:Compile</Generator>

EnvyUpdate/StringExt.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace EnvyUpdate
+{
+    public static class StringExt
+    {
+        public static string Truncate(this string value, int maxLength)
+        {
+            if (string.IsNullOrEmpty(value)) return value;
+            return value.Length <= maxLength ? value : value.Substring(0, maxLength);
+        }
+    }
+}

EnvyUpdate/Util.cs

@@ -111,7 +111,7 @@ namespace EnvyUpdate
             string updPath = "https://raw.githubusercontent.com/fyr77/EnvyUpdate/master/res/version.txt";
 
             System.Net.WebClient wc = new System.Net.WebClient();
-            string webData = wc.DownloadString(updPath);
+            string webData = wc.DownloadString(updPath).Truncate(3);
 
             return webData;
         }