only write NHX block when there is something to write
commit3aa53405dd25293657f78aa64c2154101ed08d05
authorjason <jason@bioperl.org>
Fri, 25 Nov 2005 17:16:51 +0000 (25 17:16 -0000)
committerjason <jason@bioperl.org>
Fri, 25 Nov 2005 17:16:51 +0000 (25 17:16 -0000)
tree7b97c0e8ed4866a4deceb359faa094027ce1d174
parent70fe1ad5371e039fe6eaf33f200c83ddddf99b84
only write NHX block when there is something to write

svn path=/bioperl-live/trunk/; revision=9478
Bio/Tree/NodeNHX.pm