Fix updater for update locations with spaces in the path

src/Jackett.Updater/Jackett.Updater.csproj

@@ -62,6 +62,7 @@
       <Private>True</Private>
     </Reference>
     <Reference Include="System.Net.Http.WebRequest" />
+    <Reference Include="System.Web" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="Microsoft.CSharp" />

src/Jackett.Updater/Program.cs

@@ -9,6 +9,7 @@ using System.Reflection;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
+using System.Web;
 /*
 // no supported by appveyor, disabeling for now
 #if __MonoCS__
@@ -223,7 +224,7 @@ namespace Jackett.Updater
         private string GetUpdateLocation()
         {
             var location = new Uri(Assembly.GetEntryAssembly().GetName().CodeBase);
-            return new FileInfo(location.AbsolutePath).DirectoryName;
+            return new FileInfo(HttpUtility.UrlDecode(location.AbsolutePath)).DirectoryName;
         }
     }
 }