refactor: reduce check if args is empty/null and don't substituted it…

… removing empty string being produced

hooks/post-command

@@ -39,14 +39,6 @@ if [[ -n "${PARAMETER_FILES}" ]]; then
  args+=("--parameter-files=${PARAMETER_FILES}")
 fi
 
-# check if the args array is not empty and expand parameters into string
-# else use an empty string, to avoid 'unbound variable' on expansion of arrays if empty
-
-cmd_args=""
-if [[ "${#args[@]}" -ne 0 ]]; then
- cmd_args+="${args[*]}"
-fi
-
 # Get the architecture of the machine for running the container image due to "latest" not being multi-architecture
 # Available images: `latest`, `latest-amd64` and `latest-arm64`
 # therefore default case will use `latest`
@@ -146,7 +138,7 @@ iacScan() {
  -f human \
  -o /scan/result/output,human \
  --name "$BUILDKITE_JOB_ID" \
- --path "/scan/$FILE_PATH" "${cmd_args}"
+ --path "/scan/$FILE_PATH" ${args:+"${args[@]}"}
 
  exit_code="$?"
  case $exit_code in