Make art provider id of type "char *" instead of "wxChar *".

These strings don't need to be wide and, as elsewhere, prefer the
compatibility with 2.8 ANSI build to compatibility with Unicode build.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66503 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/logg.cpp

@@ -834,7 +834,7 @@ void wxLogDialog::CreateDetailsControls(wxWindow *parent)
     wxImageList *imageList = new wxImageList(ICON_SIZE, ICON_SIZE);
 
     // order should be the same as in the switch below!
-    static const wxChar* const icons[] =
+    static const char* const icons[] =
     {
         wxART_ERROR,
         wxART_WARNING,