walletdb: Refactor hd chain loading to its own function

Author: achow101

src/wallet/walletdb.cpp

@@ -452,6 +452,22 @@ bool LoadEncryptionKey(CWallet* pwallet, DataStream& ssKey, DataStream& ssValue,
     return true;
 }
 
+bool LoadHDChain(CWallet* pwallet, DataStream& ssValue, std::string& strErr)
+{
+    LOCK(pwallet->cs_wallet);
+    try {
+        CHDChain chain;
+        ssValue >> chain;
+        pwallet->GetOrCreateLegacyScriptPubKeyMan()->LoadHDChain(chain);
+    } catch (const std::exception& e) {
+        if (strErr.empty()) {
+            strErr = e.what();
+        }
+        return false;
+    }
+    return true;
+}
+
 static bool
 ReadKeyValue(CWallet* pwallet, DataStream& ssKey, CDataStream& ssValue,
              CWalletScanState &wss, std::string& strType, std::string& strErr, const KeyFilterFn& filter_fn = nullptr) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
@@ -672,9 +688,7 @@ ReadKeyValue(CWallet* pwallet, DataStream& ssKey, CDataStream& ssValue,
                 pwallet->LoadAddressReceiveRequest(dest, strKey.substr(2), strValue);
             }
         } else if (strType == DBKeys::HDCHAIN) {
-            CHDChain chain;
-            ssValue >> chain;
-            pwallet->GetOrCreateLegacyScriptPubKeyMan()->LoadHDChain(chain);
+            if (!LoadHDChain(pwallet, ssValue, strErr)) return false;
         } else if (strType == DBKeys::OLD_KEY) {
             strErr = "Found unsupported 'wkey' record, try loading with version 0.18";
             return false;

src/wallet/walletdb.h

@@ -309,6 +309,7 @@ bool ReadKeyValue(CWallet* pwallet, DataStream& ssKey, CDataStream& ssValue, std
 bool LoadKey(CWallet* pwallet, DataStream& ssKey, DataStream& ssValue, std::string& strErr);
 bool LoadCryptedKey(CWallet* pwallet, DataStream& ssKey, DataStream& ssValue, std::string& strErr);
 bool LoadEncryptionKey(CWallet* pwallet, DataStream& ssKey, DataStream& ssValue, std::string& strErr);
+bool LoadHDChain(CWallet* pwallet, DataStream& ssValue, std::string& strErr);
 } // namespace wallet
 
 #endif // BITCOIN_WALLET_WALLETDB_H