Bug 191168 [Regression]Exception occurs when resize masterpage in library
Description: Exception occurs when resize masterpage in library. Build number:2.2.0.v20070606-0630 Regression bug:187443 Steps to reproduce: 1. New a library. 2. Go to Master Page, resize the master page using the ruler. Expected result: 1. Layout works correctly. 2. No exception is thrown out. Error log: An unexpected internal exception occurred.Please see log for detail. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070606-0630 Error Code:Error.GUIException.invokedByUnexpectedException Error Message:org.eclipse.birt.report.designer.internal.lib.lalyout.LibraryReportDesignLayout
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/Module.java
}
	/**
	 * Finds the property binding defined in this module, which has the same
	 * property name with the given property name and has the same element id of
	 * the given element.
	 * 
	 * @param element
	 *            the element to find
	 * @param propName
	 *            the property name to find
	 * @return the matched property binding defined in the module, otherwise
	 *         null
	 */
	public PropertyBinding findPropertyBinding( DesignElement element,
			String propName )
	{
		
		if ( element == null || propName == null )
			return null;
		
		
		if ( element.getPropertyDefn( propName ) == null )
			return null;
		
		
		List propertyBindings = getListProperty( this, PROPERTY_BINDINGS_PROP );
		if ( propertyBindings == null )
			return null;
		for ( int i = 0; i < propertyBindings.size( ); i++ )
		{