[wing] Fixed missing return value in wing_named_pipe_connection_close

[Silvio Lazzeretti <silviol src gnome org>]

commit a1f85cfcd1b4e56351ba5fa19e38598fe9c81043
Author: Marco Mastropaolo <marcomp amazon com>
Date:   Thu Jan 9 16:54:11 2020 +0100

    Fixed missing return value in wing_named_pipe_connection_close

 wing/wingnamedpipeconnection.c | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/wing/wingnamedpipeconnection.c b/wing/wingnamedpipeconnection.c
index f88ad88..9dedac9 100644
--- a/wing/wingnamedpipeconnection.c
+++ b/wing/wingnamedpipeconnection.c
@@ -268,6 +268,8 @@ wing_named_pipe_connection_close (GIOStream     *stream,
       CloseThreadpoolIo (connection->threadpool_io);
       connection->threadpool_io = NULL;
     }
+
+  return TRUE;
 }
 
 static void