Use W/A macro

Author: SylvainCorlay

include/xtl/xsystem.hpp

@@ -76,21 +76,13 @@ namespace xtl
         {
             GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, reinterpret_cast<LPCTSTR>(module_path), &handle);
         }
-    #if defined(UNICODE)
-        if (GetModuleFileNameW(handle, buffer, sizeof(buffer)) != 0)
+        if (GetModuleFileName(handle, buffer, sizeof(buffer)) != 0)
         {
             // Convert wchar_t to std::string
             std::wstring wideString(buffer);
             std::string narrowString(wideString.begin(), wideString.end());
             path = narrowString;
         }
-    #else
-        if (GetModuleFileNameA(handle, buffer, sizeof(buffer)) != 0)
-        {
-            path = buffer;
-        }
-    #endif
-        // failed to determine run path
 #elif defined (__APPLE__)
         std::uint32_t size = sizeof(buffer);
         if(_NSGetExecutablePath(buffer, &size) == 0)