Fixed unicode support under windows console

luprex/cpp/drv/driver-windows.cpp

@@ -3,6 +3,7 @@
 
 #include "drvutil.hpp"
 #include "sslutil.hpp"
+#include "readline.hpp"
 #include "../core/enginewrapper.hpp"
 
 #include <iostream>
@@ -233,8 +234,8 @@ static void console_write(const CodepointString &cps) {
     if (cps.size() == 0) return;
     // Convert to wstring.
     // Any character outside the range 0xFFFF is replaced with a box.
-    std::wstring ws(cps.size());
-    for (int i = 0; i < cps.size(); i++) {
+    std::wstring ws(cps.size(), 0);
+    for (int i = 0; i < int(cps.size()); i++) {
         char32_t c = cps[i];
         if ((c >= 0)&&(c <= 0xFFFF)) ws[i] = (wchar_t)c;
         else ws[i] = 0x2610;