[ocrfeeder] Fix spell checker window

[Joaquim Rocha <jrocha src gnome org>]

commit 6bcd2c9b01d9d3a73a157f8d8208a60d67cd3ed7
Author: scx <scx mail gmail com>
Date:   Sat Jan 4 18:10:13 2020 +0100

    Fix spell checker window
    
    Fixes GNOME/ocrfeeder#16

 src/ocrfeeder/studio/widgetPresenter.py | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
---
diff --git a/src/ocrfeeder/studio/widgetPresenter.py b/src/ocrfeeder/studio/widgetPresenter.py
index 7ffbc05..088fa06 100644
--- a/src/ocrfeeder/studio/widgetPresenter.py
+++ b/src/ocrfeeder/studio/widgetPresenter.py
@@ -2061,10 +2061,10 @@ class SpellCheckerDialog():
     def __init__(self, parent, current_reviewer, language):
         self.builder = Gtk.Builder()
         self.builder.add_from_file(OCRFEEDER_SPELLCHECKER_UI)
-        self = self.builder.get_object('check_spelling_window')
-        self.set_transient_for(parent)
+        self.window = self.builder.get_object('check_spelling_window')
+        self.window.set_transient_for(parent)
         self.builder.connect_signals(self)
-        self.present()
+        self.window.present()
         self.reviewer = current_reviewer
         self.text = self.reviewer.editor.box_editor.getText()
         self.dictButtons = {'change_button':self.builder.get_object('change_button'),
@@ -2133,10 +2133,10 @@ class SpellCheckerDialog():
         self.__next()
 
     def close_button_clicked_cb(self, widget):
-        self.destroy()
+        self.window.destroy()
 
     def check_spelling_window_delete_event_cb(self, widget, data):
-        self.destroy()
+        self.window.destroy()
 
     def __set_no_more(self):
         self.misspelled_word.set_text('')