[Wallet] optimize return value of InitLoadWallet()

src/init.cpp

@@ -1427,12 +1427,15 @@ bool AppInit2(boost::thread_group& threadGroup, CScheduler& scheduler)
         std::string warningString;
         std::string errorString;
         pwalletMain = CWallet::InitLoadWallet(fDisableWallet, strWalletFile, warningString, errorString);
-        if (!pwalletMain)
-            return false;
         if (!warningString.empty())
             InitWarning(warningString);
         if (!errorString.empty())
+        {
+            LogPrintf("%s", errorString);
             return InitError(errorString);
+        }
+        if (!pwalletMain)
+            return false;
     }
 #else // ENABLE_WALLET
     LogPrintf("No wallet support compiled in!\n");

src/wallet/wallet.cpp

@@ -3002,6 +3002,7 @@ CWallet* CWallet::InitLoadWallet(bool fDisableWallet, const std::string& strWall
         CWallet *tempWallet = new CWallet(strWalletFile);
         DBErrors nZapWalletRet = tempWallet->ZapWalletTx(vWtx);
         if (nZapWalletRet != DB_LOAD_OK) {
+            errorString = _("Error loading wallet.dat: Wallet corrupted");
             uiInterface.InitMessage(_("Error loading wallet.dat: Wallet corrupted"));
             return NULL;
         }
@@ -3031,10 +3032,12 @@ CWallet* CWallet::InitLoadWallet(bool fDisableWallet, const std::string& strWall
         {
             errorString += strprintf(_("Wallet needed to be rewritten: restart %s to complete"), _(PACKAGE_NAME)) + "\n";
             LogPrintf("%s", errorString);
-            return walletInstance;
         }
         else
             errorString += _("Error loading wallet.dat") + "\n";
+
+        if (!errorString.empty())
+            return NULL;
     }
 
     if (GetBoolArg("-upgradewallet", fFirstRun))
@@ -3049,7 +3052,10 @@ CWallet* CWallet::InitLoadWallet(bool fDisableWallet, const std::string& strWall
         else
             LogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
         if (nMaxVersion < walletInstance->GetVersion())
+        {
             errorString += _("Cannot downgrade wallet") + "\n";
+            return NULL;
+        }
         walletInstance->SetMaxVersion(nMaxVersion);
     }
 
@@ -3062,13 +3068,15 @@ CWallet* CWallet::InitLoadWallet(bool fDisableWallet, const std::string& strWall
         if (walletInstance->GetKeyFromPool(newDefaultKey)) {
             walletInstance->SetDefaultKey(newDefaultKey);
             if (!walletInstance->SetAddressBook(walletInstance->vchDefaultKey.GetID(), "", "receive"))
+            {
                 errorString += _("Cannot write default address") += "\n";
+                return NULL;
+            }
         }
 
         walletInstance->SetBestChain(chainActive.GetLocator());
     }
 
-    LogPrintf("%s", errorString);
     LogPrintf(" wallet      %15dms\n", GetTimeMillis() - nStart);
 
     RegisterValidationInterface(walletInstance);
@@ -3099,7 +3107,7 @@ CWallet* CWallet::InitLoadWallet(bool fDisableWallet, const std::string& strWall
             if (pindexRescan != block)
             {
                 errorString = _("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)");
-                return walletInstance;
+                return NULL;
             }
         }