more sensible check for enumeration failure in svp reduction
more sensible check for enumeration failure in svp reduction

blowfish880/fplll,cr-marcstevens/fplll,cr-marcstevens/fplll,malb/fplll,GottfriedHerold/fplll,blowfish880/fplll,fplll/fplll,malb/fplll,blowfish880/fplll,fplll/fplll,dstehle/fplll,fplll/fplll,pfasante/fplll,shi-bai/fplll,gbonnoron/fplll,dstehle/fplll,shi-bai/fplll,shi-bai/fplll,fplll/fplll,shi-bai/fplll,gbonnoron/fplll,GottfriedHerold/fplll,malb/fplll,fplll/fplll,GottfriedHerold/fplll,pfasante/fplll,pfasante/fplll,gbonnoron/fplll,cr-marcstevens/fplll,dstehle/fplll,cr-marcstevens/fplll