[walletdb] Fix syntax error in key parser

src/wallet/db.cpp

@@ -205,7 +205,7 @@ bool CDBEnv::Salvage(const std::string& strFile, bool fAggressive, std::vector<C
     std::string keyHex, valueHex;
     while (!strDump.eof() && keyHex != "DATA=END") {
         getline(strDump, keyHex);
-        if (keyHex != "DATA_END") {
+        if (keyHex != "DATA=END") {
             getline(strDump, valueHex);
             vResult.push_back(make_pair(ParseHex(keyHex), ParseHex(valueHex)));
         }