core: close Stream after Connection.Invoke

Fixes core.Stream leaking on every core.(*Connection).Invoke()
https://lists.fd.io/g/govpp-dev/topic/govpp_is_leaking_channels_on/85836420

Signed-off-by: Vladimir Popov <vladimir.popov@xored.com>
Change-Id: I8d5bcb3c3aa40ccda3fb249ee80bb82809f284b1

diff --git a/core/stream.go b/core/stream.go
index 363cc9f..2f639b0 100644 (file)
--- a/core/stream.go
+++ b/core/stream.go
@@ -70,6 +70,7 @@ func (c *Connection) Invoke(ctx context.Context, req api.Message, reply api.Mess
        if err != nil {
                return err
        }
+       defer func() { _ = stream.Close() }()
        if err := stream.SendMsg(req); err != nil {
                return err
        }