Resolve GtkWarning: IA__gtk_tree_view_expand_row: assertion tree_view->priv->model != NULL
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@ -1822,7 +1822,8 @@ class GroupchatControl(ChatControlBase):
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fake_jid)
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if nick == self.nick: # we became online
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self.got_connected()
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self.list_treeview.expand_row((self.model.get_path(role_iter)), False)
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if self.list_treeview.get_model():
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self.list_treeview.expand_row((self.model.get_path(role_iter)), False)
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if self.is_continued:
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self.draw_banner_text()
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return iter_
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