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

*** 1237,1247 ****
   */
  static void
  dsl_scan_ddt(dsl_scan_t *scn, dmu_tx_t *tx)
  {
          ddt_bookmark_t *ddb = &scn->scn_phys.scn_ddt_bookmark;
!         ddt_entry_t dde = { 0 };
          int error;
          uint64_t n = 0;
  
          while ((error = ddt_walk(scn->scn_dp->dp_spa, ddb, &dde)) == 0) {
                  ddt_t *ddt;
--- 1237,1247 ----
   */
  static void
  dsl_scan_ddt(dsl_scan_t *scn, dmu_tx_t *tx)
  {
          ddt_bookmark_t *ddb = &scn->scn_phys.scn_ddt_bookmark;
!         ddt_entry_t dde = { .dde_loaded = 0 };
          int error;
          uint64_t n = 0;
  
          while ((error = ddt_walk(scn->scn_dp->dp_spa, ddb, &dde)) == 0) {
                  ddt_t *ddt;