Add a temporary workaround to make the tests pass.

Call SetCLocale() on tests startup to avoid problems with wxDateTime parsing
that happen when the user locale is different from "C" one under Windows.

See #14918.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@73244 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

tests/test.cpp

@@ -472,6 +472,8 @@ bool TestApp::OnInit()
     if ( !TestAppBase::OnInit() )
         return false;
 
+    SetCLocale();
+
 #if wxUSE_GUI
     cout << "Test program for wxWidgets GUI features\n"
 #else