session: improve close procedure

Change-Id: I6201a044e70ab6a58db8212960c57edc77c41f96
Signed-off-by: Florin Coras <fcoras@cisco.com>
diff --git a/src/vnet/session/segment_manager.c b/src/vnet/session/segment_manager.c
index 0c19293..bf62040 100644
--- a/src/vnet/session/segment_manager.c
+++ b/src/vnet/session/segment_manager.c
@@ -591,7 +591,9 @@
       /* Remove segment manager if no sessions and detached from app */
       if (segment_manager_app_detached (sm)
 	  && !segment_manager_has_fifos (sm))
-	segment_manager_del (sm);
+	{
+	  segment_manager_del (sm);
+	}
     }
   else
     segment_manager_segment_reader_unlock (sm);