fix issue, then it wasn't possible to view FBD programs

the reason for that is possible wx-3.0-gtk2 bug that happens if
ALWAYS_SHOW_SB is set.

Traceback (most recent call last):
File "Beremiz.py", line 1045, in OnProjectTreeItemActivated
IDEFrame.OnProjectTreeItemActivated(self, event)
File "IDEFrame.py", line 1667, in OnProjectTreeItemActivated
self.EditProjectElement(item_infos["type"], item_infos["tagname"])
File "IDEFrame.py", line 1752, in EditProjectElement
new_window = Viewer(self.TabsOpened, tagname, self, self.Controler)
File "editors/Viewer.py", line 611, in __init__
EditorPanel.__init__(self, parent, tagname, window, controler, debug)
File "editors/EditorPanel.py", line 68, in __init__
self._init_ctrls(parent)
File "editors/EditorPanel.py", line 52, in _init_ctrls
self._init_Editor(self)
File "editors/Viewer.py", line 603, in _init_Editor
style=wx.HSCROLL | wx.VSCROLL | wx.ALWAYS_SHOW_SB)
File "/usr/lib/python2.7/dist-packages/wx-3.0-gtk2/wx/_windows.py", line 296, in __init__
_windows_.ScrolledWindow_swiginit(self,_windows_.new_ScrolledWindow(*args, **kwargs))
PyAssertionError: C++ assertion "scrolled" failed at ../src/gtk/scrolwin.cpp(205) in DoShowScrollbars(): window must be created

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os 

import wx

# Get the default language
langid = wx.LANGUAGE_DEFAULT

# Define locale for wx
locale = wx.Locale(langid)

def GetDomain(path):
    for name in os.listdir(path):
        filepath = os.path.join(path, name)
        basename, fileext = os.path.splitext(name)
        if os.path.isdir(filepath):
            result = GetDomain(filepath)
            if result is not None:
                return result
        elif fileext == ".mo":
            return basename
    return None

def AddCatalog(locale_dir):
    if os.path.exists(locale_dir) and os.path.isdir(locale_dir):
        domain = GetDomain(locale_dir)
        if domain is not None:
            locale.AddCatalogLookupPathPrefix(locale_dir)
            locale.AddCatalog(domain)