Tab switcher: finally fix invalid QModelIndex access
Problem was that calling beginInsertRows() used the wrong row count. See warning output: kate(28432)/(default) unknown: QAbstractItemModel::endInsertRows: Invalid index ( 2 , 1 ) in model detail::TabswitcherFilesModel(0x12e61e0) kate(28432)/(default) unknown: QAbstractItemModel::endInsertRows: Invalid index ( 2 , 0 ) in model detail::TabswitcherFilesModel(0x12e61e0)
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6b934fe7
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