Bug fix: if SEQUENCE_DICTIONARY is null, NullPointerException is necessarily thrown.
Bug fix: if SEQUENCE_DICTIONARY is null, NullPointerException is necessarily thrown.

broadinstitute/picard,nh13/picard,alecw/picard,annkupi/picard,broadinstitute/picard,annkupi/picard,alecw/picard,nh13/picard,nh13/picard,broadinstitute/picard,annkupi/picard,broadinstitute/picard,broadinstitute/picard,annkupi/picard,nh13/picard,alecw/picard,alecw/picard