returned isprint check

src/rpc/crosschain.cpp

@@ -1464,9 +1464,7 @@ UniValue getwalletburntransactions(const UniValue& params, bool fHelp)
 
                 // check for corrupted strings (look for non-printable chars) from some older versions 
                 // which caused "couldn't parse reply from server" error on client:
-                // if (std::find_if(targetSymbol.begin(), targetSymbol.end(), [](int c) {return !std::isprint(c);}) != targetSymbol.end()) 
-                UniValue testval(UniValue::VSTR);
-                if( !testval.read(targetSymbol) )
+                if (std::find_if(targetSymbol.begin(), targetSymbol.end(), [](int c) {return !std::isprint(c);}) != targetSymbol.end()) 
                     targetSymbol = "<value corrupted>";
                 
                 entry.push_back(Pair("targetSymbol", targetSymbol));