Starting with version 0.9.5 the new olsr-deamon behaves
more standard-compliant and outputs correct HTTP-headers.
This would confuse the script and abort parsing.
Fix that by only trying to parse the JSON-value and
just ignore the other stuff. After this, we can see neighbours again.
Thanks to FreifunkUFO <ufo@rund.freifunk.net> for spotting this.
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