gh-99191: Use correct check for MSVC C++ version support in _wmimodule.cpp (GH-100381)

Author: CAM-Gerlach

Misc/NEWS.d/next/Windows/2022-12-20-18-36-17.gh-issue-99191.0cfRja.rst

@@ -0,0 +1,2 @@
+Use ``_MSVC_LANG >= 202002L`` instead of less-precise ``_MSC_VER >=1929``
+to more accurately test for C++20 support in :file:`PC/_wmimodule.cpp`.

PC/_wmimodule.cpp

@@ -17,7 +17,7 @@
 #include <Python.h>
 
 
-#if _MSC_VER >= 1929
+#if _MSVC_LANG >= 202002L
 // We can use clinic directly when the C++ compiler supports C++20
 #include "clinic/_wmimodule.cpp.h"
 #else
@@ -96,9 +96,9 @@ _query_thread(LPVOID param)
     }
     if (SUCCEEDED(hr)) {
         hr = services->ExecQuery(
-            bstr_t("WQL"), 
+            bstr_t("WQL"),
             bstrQuery,
-            WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY, 
+            WBEM_FLAG_FORWARD_ONLY | WBEM_FLAG_RETURN_IMMEDIATELY,
             NULL,
             &enumerator
         );