miniupnpd: use fw4 to indicate fw4 instead of nft

[rohit-btuk]

Change miniupnpd init script to use "fw4" to indicate use of fw4, instead of "nft".
This allows miniupnpd to work in a situation where the platform supports nftables, but not fw4.

📦 Package Details

Maintainer: ardeleanalex@gmail.com
_{(You can find this by checking the history of the package Makefile.)}

Description:

---

🧪 Run Testing Details

• OpenWrt Version:
• OpenWrt Target/Subtarget:
• OpenWrt Device:

---

✅ Formalities

• I have reviewed the CONTRIBUTING.md file for detailed contributing guidelines.

If your PR contains a patch:

• It can be applied using git am
• It has been refreshed to avoid offsets, fuzzes, etc., using

  make package/<your-package>/refresh V=s

• It is structured in a way that it is potentially upstreamable
  _{(e.g., subject line, commit description, etc.)
  We must try to upstream patches to reduce maintenance burden.}

[openwrt-ai]

Reviewed 1 new commit. The command -v nft → command -v fw4 change is correct: $FW is later invoked as an executable ($FW -q zone, fw4 reload), so gating on the actual fw4 binary rather than nft is the right condition. One inline comment on the missing PKG_RELEASE bump. Not a backport; commit message matches the change.

---

Generated by Claude Code

[openwrt-ai]

This is a functional change to how the firewall backend is selected (it alters runtime behavior on nftables-without-fw4 systems), not a cosmetic edit, so it should bump PKG_RELEASE so the updated init script is actually packaged and delivered to users. PKG_RELEASE is currently 3 and unchanged: net/miniupnpd/Makefile#L12. Please bump it to 4. (The openwrt bot's release audit flagged the same missing bump.)

---

Generated by Claude Code

[rohit-btuk]

@openwrt-ai made the change.

[openwrt-ai]

Reviewed 1 updated commit; no new issues found. The previously flagged missing PKG_RELEASE bump has been addressed (3 → 4), so the updated init script will be repackaged. The only substantive change since the last review is that release bump; the command -v nft → command -v fw4 init change was already confirmed correct.

---

Generated by Claude Code