wxStrdup(NULL) doesn't work

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23027 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/toback24.txt

@@ -133,6 +133,12 @@ http://sf.net/tracker/index.php?func=detail&aid=729758&group_id=9863&atid=309863
 Checking in src/common/intl.cpp;
 /pack/cvsroots/wxwindows/wxWindows/src/common/intl.cpp,v  <--  intl.cpp
 new revision: 1.95; previous revision: 1.94
+done
+Checking in intl.cpp
+/pack/cvsroots/wxwindows/wxWindows/src/common/intl.cpp,v  <--  intl.cpp
+new revision: 1.102; previous revision: 1.101
+done
+
 
 
 15. Fixes for mono bitmaps in wxGTK

src/common/intl.cpp

@@ -647,7 +647,9 @@ bool wxLocale::Init(const wxChar *szName,
   // TODO: how to find languageId
   // SetLocaleInfo(languageId, SORT_DEFAULT, localeName);
 #else
-  m_pszOldLocale = wxStrdup(wxSetlocale(LC_ALL, szLocale));
+  m_pszOldLocale = wxSetlocale(LC_ALL, szLocale);
+  if ( m_pszOldLocale )
+      m_pszOldLocale = wxStrdup(m_pszOldLocale);
 #endif
 
   if ( m_pszOldLocale == NULL )