add default value for the encoding parameter of wxMacCFStringHolder() instead of passing wxLocale::GetSystemEncoding() which doesn't work when wxUSE_INTL == 0 to it in many places (replaces 2nd part of patch 1501724)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40283 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/mac/corefoundation/cfstring.cpp

@@ -105,9 +105,10 @@ wxUint32 wxMacGetSystemEncFromFontEnc(wxFontEncoding encoding)
 #if wxUSE_GUI
         encoding = wxFont::GetDefaultEncoding() ;
 #else
-        encoding = wxLocale::GetSystemEncoding() ;
+        encoding = wxFONTENCODING_SYSTEM; // to be set below
 #endif
     }
+
     if ( encoding == wxFONTENCODING_SYSTEM )
     {
         enc = CFStringGetSystemEncoding();