common: fix varargs cleanup
common: fix varargs cleanup

Coverity:
CID 739703 (#1 of 1): Missing varargs init or cleanup (VARARGS)
At (4): va_end was not called for "ap2".

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

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