Bug 164989 [Viewers] ColumnViewer#getColumnViewerOwner() doesn't respects column count
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/ColumnViewer.java
private ToolTipSupport tooltipSupport;
	/**
	 * The cell is a cached viewer cell used for refreshing.
	 */
	private ViewerCell cell = new ViewerCell(null, 0);