fix: absent SSH_AUTHORIZED_KEY does not cause failure

nixos-infect

@@ -30,9 +30,11 @@ readonly NIX_OPTS=(--extra-experimental-features "nix-command flakes")
 DoNetConf=
 
 genOptionalSsh() {
-  [ -n "${SSH_AUTHORIZED_KEY}" ] && cat << EOF
+  if [ -n "${SSH_AUTHORIZED_KEY}" ]; then
+      cat << EOF
 "ssh": { "rootKeys": [ "${SSH_AUTHORIZED_KEY}" ] },
 EOF
+  fi
 }
 
 # TODO receive disk device path from outside
@@ -528,8 +530,6 @@ set -o xtrace
 shopt -s inherit_errexit
 trap 'echo ${LINENO}: "$BASH_COMMAND"; exit 1' ERR
 
-genNetworkingConf
-
 # digitalocean requires detailed network config to be generated
 [ "$PROVIDER" == "digitalocean" ] && DoNetConf="y"