[MacPorts] #49692: rrdtool @1.5.4_0: update to 1.5.5

[MacPorts]

#49692: rrdtool @1.5.4_0: update to 1.5.5
----------------------------+--------------------------------
 Reporter:  mschamschula@…  |      Owner:  macports-tickets@…
     Type:  update          |     Status:  new
 Priority:  Normal          |  Milestone:
Component:  ports           |    Version:  2.3.4
 Keywords:  haspatch        |       Port:  rrdtool
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 rrdtool has been updated to version 1.5.5. Changes:

 ** Bugfixes
 * fix JSON output in xport with legend and gprint blocks
 * fix parse_time mutex unlocking in the error case
 * don't crash on invalid variable names in CDEF
 * add mutex locking in rrdc_fetch
 * fix buffer overflow in rrd_restore
 * shorten test precision to 7 digits ...
 * never exit from a library function
 * buffer overflow in rrd_restore.c fixed

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Ticket URL: <https://trac.macports.org/ticket/49692>
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