Change file name of downloaded update installer.

zaaReloaded2/Updater/Updater.cs

@@ -33,5 +33,14 @@ namespace zaaReloaded2.Updater
         {
             return new Uri(Properties.Settings.Default.VersionInfoFile);
         }
+
+        protected override string BuildDestinationFileName()
+        {
+            return System.IO.Path.Combine(
+                DestinationFolder,
+                DownloadUri.ToString().Split('/').Last()
+                );
+        }
+
     }
 }