VOL-4697: Fixes for rolling update case

Change-Id: I4c529ed8ec90013be0dd953ba4b2bf5708872e63
diff --git a/rw_core/core/adapter/agent.go b/rw_core/core/adapter/agent.go
index e7c3d2b..0a2b632 100644
--- a/rw_core/core/adapter/agent.go
+++ b/rw_core/core/adapter/agent.go
@@ -95,6 +95,7 @@
 	if err != nil {
 		return nil, err
 	}
+
 	c, ok := client.(adapter_service.AdapterServiceClient)
 	if ok {
 		return c, nil