Safely cleanup the opal_proc_t structure for non-MPI procs.

This commit was SVN r32402.

orte/util/proc_info.c

@@ -374,6 +374,7 @@ int orte_proc_info_finalize(void)
     OBJ_RELEASE(orte_process_info.sync_buf);
     orte_process_info.sync_buf = NULL;
 
+    OBJ_DESTRUCT(&orte_process_info.super);
 
     init = false;
     return ORTE_SUCCESS;