use UTF8-encoded char* strings in UTF8 build instead of wchar_t* if the current locale uses UTF8;

fall back to widechar CRT functions in the locale is not UTF8


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@45663 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/common/http.cpp

@@ -141,7 +141,7 @@ wxString wxHTTP::GenerateAuthString(const wxString& user, const wxString& pass)
         } else {
             buf << wxString::Format(wxT("%c%c"), base64[((from[0] << 4) & 0x30) | ((from[1] >> 4) & 0xf)], base64[(from[1] << 2) & 0x3c]);
         }
-        buf << wxString::Format(wxT("="));
+        buf << wxT("=");
     }
 
     return buf;