CloningDAO: Fix find so that it calls sink.error on error, not sink.eof.
CloningDAO: Fix find so that it calls sink.error on error, not sink.eof.

jlhughes/foam,jacksonic/foam,foam-framework/foam,mdittmer/foam,foam-framework/foam,osric-the-knight/foam,jacksonic/foam,foam-framework/foam,osric-the-knight/foam,foam-framework/foam,jlhughes/foam,mdittmer/foam,mdittmer/foam,osric-the-knight/foam,jacksonic/foam,mdittmer/foam,jlhughes/foam,jacksonic/foam,jlhughes/foam,foam-framework/foam,osric-the-knight/foam