key_manager: Resolve missing field initializer warning

src/core/crypto/key_manager.cpp

@@ -1202,7 +1202,8 @@ const boost::container::flat_map<std::string, KeyIndex<S128KeyType>> KeyManager:
      {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyAreaKey),
       static_cast<u64>(KeyAreaKeyType::System)}},
     {"titlekek_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::Titlekek), 0}},
-    {"keyblob_mac_key_source", {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC)}},
+    {"keyblob_mac_key_source",
+     {S128KeyType::Source, static_cast<u64>(SourceKeyType::KeyblobMAC), 0}},
     {"tsec_key", {S128KeyType::TSEC, 0, 0}},
     {"secure_boot_key", {S128KeyType::SecureBoot, 0, 0}},
     {"sd_seed", {S128KeyType::SDSeed, 0, 0}},