fix syntax error on ppid assignment

# shellcheck disable=SC2206 # do not break the array into a single string

args+=(${PROFILE_OPT[@]})

args+=("${pid}")

nsd-conda-wrap.sh "${args[@]}" > ${PTMP} & ppid=$i

nsd-conda-wrap.sh "${args[@]}" > "${PTMP}" & ppid=$!

echo "Writing profile output to ${PTMP}"

trap 'set -x ; kill -HUP $pid $ppid' SIGINT

# follow output from main app and cleanup

tail -f ${TMP} --pid $pid

wait -n $ppid && echo "Wrote ${PROFILE_OUT}"

tail -f "${TMP}" --pid $pid

wait -n "$ppid" && echo "Wrote ${PROFILE_OUT}"

trap - EXIT