Fix the unparsed tag

[dorezyuk]

Fixes the warnings

<7>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Found tag: 0x0"}
<3>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Unhandled tag: 0x0. We give up parsing here, your data is only partially interpreted."}
<7>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Found tag: 0x0"}
<3>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Unhandled tag: 0x0. We give up parsing here, your data is only partially interpreted."}
<7>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Found tag: 0x2"}
<3>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Unhandled tag: 0x2. We give up parsing here, your data is only partially interpreted."}
<7>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Found tag: 0x0"}
<3>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Unhandled tag: 0x0. We give up parsing here, your data is only partially interpreted."}
<7>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Found tag: 0x0"}
<3>{"CODE_FILE":"external/rules_rust++crate+crate_index__zvt-0.1.1/src/packets.rs","CODE_LINE":16,"MESSAGE":"Unhandled tag: 0x0. We give up parsing here, your data is only partially interpreted."}
<7>{"CODE_FILE":"./external/rules_rust++crate+crate_index__zvt-0.1.1/src/io.rs","CODE_LINE":60,"MESSAGE":"TX: 80 00 00"}

since the nested style actually created a tag

[ydankner]

If it's easy to add a test for this case, it would be great. Not a must