do not fail with allocation error even if contig names are not like nodename_contigname, but just nodename
do not fail with allocation error even if contig names are not like nodename_contigname, but just nodename


Former-commit-id: 1701697969c3c2af98f5e9832d0600f4f624c203
karel-brinda/prophyle,karel-brinda/prophyle,karel-brinda/prophyle,karel-brinda/prophyle