6659 nvlist_free(NULL) is a no-op

@@ -69,11 +69,10 @@
                     SVE_STE_CLASS, component, attr_list, NULL, DDI_SLEEP);
         else if (strcmp(driver_name, "ii") == 0)
                 rc = ddi_log_sysevent(info_dip, DDI_VENDOR_SUNW,
                     SVE_II_CLASS, component, attr_list, NULL, DDI_SLEEP);
 out:
-        if (attr_list)
                 nvlist_free(attr_list);
 
         if (rc != 0) {
                 cmn_err(CE_WARN, "!%s: unable to log sysevent %d:%s and %d",
                     driver_name, errorno, trap_messages, alertlevel);