btl/tcp: fix minor memory leak

When tearing down the BTL TCP component, use the handy
OPAL_LIST_DESTRUCT macro to OBJ_RELEASE all elements of the
mca_btl_tcp_component.local_ifs list and then OBJ_DESTRUCT -- not
OBJ_RELEASE -- the list itself.

Signed-off-by: Jeff Squyres <jeff@squyres.com>

Author: jsquyres

opal/mca/btl/tcp/btl_tcp_component.c

@@ -20,6 +20,7 @@
  * Copyright (c) 2014-2017 Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2018-2022 Amazon.com, Inc. or its affiliates.  All Rights reserved.
+ * Copyright (c) 2023      Jeffrey M. Squyres.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -472,7 +473,7 @@ static int mca_btl_tcp_component_close(void)
     OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_frag_max);
     OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_frag_user);
     OBJ_DESTRUCT(&mca_btl_tcp_component.tcp_lock);
-    OBJ_DESTRUCT(&mca_btl_tcp_component.local_ifs);
+    OPAL_LIST_DESTRUCT(&mca_btl_tcp_component.local_ifs);
 
     return OPAL_SUCCESS;
 }