7127  remove -Wno-missing-braces from Makefile.uts

@@ -1394,11 +1394,11 @@
  * We need to post a soft interrupt to reprogram the lbolt cyclic when
  * switching from event to cyclic driven lbolt. The following code adds
  * and posts the softint for x86.
  */
 static ddi_softint_hdl_impl_t lbolt_softint_hdl =
-        {0, NULL, NULL, NULL, 0, NULL, NULL, NULL};
+        {NULL, 0, {{NULL}}, NULL, NULL, NULL, NULL, NULL};
 
 void
 lbolt_softint_add(void)
 {
         (void) add_avsoftintr((void *)&lbolt_softint_hdl, LOCK_LEVEL,