SpatialIndexHandler::checkSpatialIndexEntries does not work for shape files with "empty" records

[cmadsen]

The code in SpatialIndexHandler::checkSpatialIndexEntries assumes the length of spatialIndex and bufferedList are equal:

        Iterator<?> entryIt = spatialIndex.entryIterator();
        Iterator<?> omgIt = bufferedList.iterator();
        while (entryIt.hasNext() && omgIt.hasNext()) {

but when the shape file contains empty records this is not the case.

This is only a problem if buffered is set to true in SpatialIndexHandler.