a hack to workaround missing wxBuffer in wxBase/Unix

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7259 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

utils/tex2rtf/src/tex2rtf.cpp

@@ -105,7 +105,11 @@ void ShowOptions(void);
 
 #ifdef NO_GUI
 
-extern char *wxBuffer; // we must init it, otherwise tex2rtf will crash
+#if wxUSE_GUI || !defined(__UNIX__)
+// wxBase for Unix does not have wxBuffer
+extern 
+#endif
+char *wxBuffer; // we must init it, otherwise tex2rtf will crash
 
 int main(int argc, char **argv)
 #else