Distinguish unhandled error type

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>

shadowsocks-csharp/Program.cs

@@ -85,7 +85,7 @@ namespace Shadowsocks
                 Logging.Error(e.ExceptionObject?.ToString());
                 MessageBox.Show(
                     $"{I18N.GetString("Unexpected error, shadowsocks will exit. Please report to")} https://github.com/shadowsocks/shadowsocks-windows/issues {Environment.NewLine}{e.ExceptionObject?.ToString()}",
-                    "Shadowsocks Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    "Shadowsocks non-UI Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
                 Application.Exit();
             }
         }
@@ -96,7 +96,7 @@ namespace Shadowsocks
             Logging.Error(errorMsg);
             MessageBox.Show(
                 $"{I18N.GetString("Unexpected error, shadowsocks will exit. Please report to")} https://github.com/shadowsocks/shadowsocks-windows/issues {Environment.NewLine}{errorMsg}",
-                "Shadowsocks Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                "Shadowsocks UI Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
             Application.Exit();
         }