[ DDS ] Remove extra stderr.close()

Change-Id: Ice61586e2a60d039987b1e3b5f5f328cc46fb41e
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/371880
Commit-Queue: Dan Chevalier <danchevalier@google.com>
Auto-Submit: Ben Konyi <bkonyi@google.com>
Commit-Queue: Ben Konyi <bkonyi@google.com>
Reviewed-by: Dan Chevalier <danchevalier@google.com>

pkg/dds/lib/src/dds_cli_entrypoint.dart

diff --git a/pkg/dds/lib/src/dds_cli_entrypoint.dart b/pkg/dds/lib/src/dds_cli_entrypoint.dart
index 1680cba..8546707 100644
--- a/pkg/dds/lib/src/dds_cli_entrypoint.dart
+++ b/pkg/dds/lib/src/dds_cli_entrypoint.dart
@@ -129,7 +129,6 @@
           'uri': dtdInfo.uri,
         },
     }));
-    stderr.close();
   } catch (e, st) {
     writeErrorResponse(e, st);
   } finally {