cfgparser: fix some memory leaks
cfgparser: fix some memory leaks

Coverity:
CID 739682 (#1 of 2): Resource leak (RESOURCE_LEAK)
At (84): Variable "in" going out of scope leaks the storage it points to.
CID 739682 (#2 of 2): Resource leak (RESOURCE_LEAK)
At (89): Variable "in" going out of scope leaks the storage it points to.

Signed-off-by: Ferry Huberts <66e11f9f5d965b69497c7e73d5e808f8b13c1218@pelagic.nl>

zioproto/olsrd,zioproto/olsrd,sebkur/olsrd,acinonyx/olsrd,tdz/olsrd,sebkur/olsrd,cholin/olsrd,tdz/olsrd,nolith/olsrd,nolith/olsrd,tdz/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,cholin/olsrd,zioproto/olsrd,diogomg/olsrd-binary-heap,nolith/olsrd,diogomg/olsrd,diogomg/olsrd,ninuxorg/olsrd,sebkur/olsrd,diogomg/olsrd-binary-heap,diogomg/olsrd-binary-heap,diogomg/olsrd,sebkur/olsrd,ninuxorg/olsrd,cholin/olsrd,ninuxorg/olsrd,ninuxorg/olsrd,nolith/olsrd,diogomg/olsrd,ninuxorg/olsrd,nolith/olsrd,diogomg/olsrd,acinonyx/olsrd,sebkur/olsrd,zioproto/olsrd,cholin/olsrd,diogomg/olsrd-binary-heap,tdz/olsrd,tdz/olsrd,sebkur/olsrd,acinonyx/olsrd,zioproto/olsrd,diogomg/olsrd,cholin/olsrd,acinonyx/olsrd,acinonyx/olsrd,diogomg/olsrd,diogomg/olsrd-binary-heap