Bug 124600 delete Grid Column causes NPE thrown out in error log
steps to reproduce: - insert a 3*3 grid - delete grid columns one by one expected behavior: - these operations should completed without any error. actual behavior: - after i deleted the 3rd column, NPE was thrown out in error log.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
{
			int columnNumber;
			Object parent;
			ColumnPosition( Object obj )
			{
				if ( obj instanceof ColumnHandle )
				{
					ColumnHandleAdapter columnAdapter = HandleAdapterFactory