gtk-spell-check icon is not available under windows

src/conversation_textview.py

@@ -169,7 +169,12 @@ class ConversationTextview(gobject.GObject):
             )
     )
 
-    MESSAGE_CORRECTED_PIXBUF = gtkgui_helpers.get_icon_pixmap('gtk-spell-check')
+    MESSAGE_CORRECTED_PIXBUF = gtkgui_helpers.get_icon_pixmap('gtk-spell-check',
+        quiet=True)
+    if not MESSAGE_CORRECTED_PIXBUF:
+        MESSAGE_CORRECTED_PIXBUF = gtkgui_helpers.get_icon_pixmap(
+            'gajim-message_corrected')
+
 
     # smooth scroll constants
     MAX_SCROLL_TIME = 0.4 # seconds