[Py-RRDTool-Devel] Off by one bug in fetch

[Hermann L. <Her...@iw...>]

Hello,

attached is a patch which fixes a off by one error
in py-rrdtool compiled against rrdtool-1.2.15.

Two word of docuentation are also included.

Please consider for inclusion.

Thanks,
  greetings
   Hermann

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