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

@@ -1477,11 +1477,11 @@
 
 int
 zvol_getefi(void *arg, int flag, uint64_t vs, uint8_t bs)
 {
         struct uuid uuid = EFI_RESERVED;
-        efi_gpe_t gpe = { 0 };
+        efi_gpe_t gpe = { {0} };
         uint32_t crc;
         dk_efi_t efi;
         int length;
         char *ptr;