fix: windows string conversion again

Author: Tal Hadad

simplecpp.cpp

@@ -41,7 +41,6 @@
 #include <vector>
 
 #ifdef SIMPLECPP_WINDOWS
-#include <atlconv.h>
 #include <windows.h>
 #undef ERROR
 #else
@@ -2689,7 +2688,9 @@ static std::string currentDirectoryOSCalc() {
 #ifdef SIMPLECPP_WINDOWS
     TCHAR NPath[MAX_PATH];
     GetCurrentDirectory(MAX_PATH, NPath);
-    CW2A NPathA(NPath);
+    // convert the result from TCHAR* to char*
+    char NPathA[MAX_PATH];
+    ::WideCharToMultiByte(CP_ACP, 0, NPath, lstrlen(NPath), NPathA, MAX_PATH, NULL, NULL);
     return NPathA;
 #else
     const std::size_t size = 1024;