Shellcheck: Add hint for two cases not requiring quotes

install-zfs.sh

@@ -935,6 +935,8 @@ function create_pools {
   #
   # Stdin is ignored if the encryption is not set (and set via prompt).
   #
+  # shellcheck disable=SC2086 # quoting $v_pools_raid_type; barring invalid user input, the values are guaranteed not to
+  # need quoting.
   zpool create \
     "${encryption_options[@]}" \
     "${v_rpool_tweaks[@]}" \
@@ -944,6 +946,7 @@ function create_pools {
 
   # `-d` disable all the pool features (not used here);
   #
+  # shellcheck disable=SC2086 # see above
   zpool create \
     "${v_bpool_tweaks[@]}" \
     -O devices=off -O mountpoint=/boot -R "$c_zfs_mount_dir" -f \