Merge bitcoin/bitcoin#20452: util: Replace use of locale dependent atoi(…) with locale-independent std::from_chars(…) (C++17)

4343f114cc Replace use of locale dependent atoi(…) with locale-independent std::from_chars(…) (C++17) (practicalswift)

Pull request description:

  Replace use of locale dependent `atoi(…)` with locale-independent `std::from_chars(…)` (C++17).

ACKs for top commit:
  laanwj:
    Code review ACK 4343f114cc
  jonatack:
    Code review ACK 4343f114cc

Tree-SHA512: e4909da282b6cefc5ca34e13b02cc489af56cab339a77ae5c35ac9ef355d9b941b129a2bfddc1b37426b11c79a21c8b729fbb5255e6d9eaa344406b18b825494

src/qt/rpcconsole.cpp

@@ -250,7 +250,7 @@ bool RPCConsole::RPCParseCommandLine(interfaces::Node* node, std::string &strRes
                                     for(char argch: curarg)
                                         if (!IsDigit(argch))
                                             throw std::runtime_error("Invalid result query");
-                                    subelement = lastResult[atoi(curarg.c_str())];
+                                    subelement = lastResult[LocaleIndependentAtoi<int>(curarg)];
                                 }
                                 else if (lastResult.isObject())
                                     subelement = find_value(lastResult, curarg);