proto fix, see comment in protogen

go/neo/proto/protogen.go

@@ -1735,7 +1735,36 @@ func (d *decoderM) genStructHead(path string, typ *types.Struct, userType types.
 	d.emit("return 0, &mstructDecodeError{%q, op, opOk}", d.pathName(path))
 	d.emit("}")
 
-	d.n += 1
+	// Arrays can have 1 or more bytes as a header:
+	//
+	// "Array format family stores a sequence of elements in 1, 3, or 5
+	//  bytes of extra bytes in addition to the elements."
+	//
+	//   see https://github.com/msgpack/msgpack/blob/master/spec.md
+	//
+	// Therefore it's better to use "ReadArrayHeaderBytes" than using
+	//
+	//	>>> data = data[1:] // <- this fails in case we have array with 3 or 5 header bytes
+	//
+	// But there is another case, where this fix fails now, see:
+	//
+	//   W0406 14:26:25.116792 2317874 mastered.go:127] C?: talk master(127.0.0.1:32747): C?: talk M1: after identification: expect nodeTab: 127.0.0.1:52480 - 127.0.0.1:32747 .0: decode: decode: M: NotifyNodeInformation.Addr: msgp: attempted to decode type "ext" with method for "array"
+	//
+	// So here we seem to use "genStructHead", because we create code for Addr decoding.
+	// But it doesn't work as expected, because we don't have an array, but an extension
+	// type. This means:
+	//
+	//	Addr isn't an Array/Struct but an extension type and this needs to be adjusted in proto.go?
+	//	We need to differentiate in 'genStructHead' between them?
+
+	d.emit("{")
+	d.emit("_, tail, err := msgp.ReadArrayHeaderBytes(data)")
+	d.emit("if err != nil {")
+	d.emit(fmt.Sprintf("return 0, mdecodeErr(%q, err)", d.pathName(path)))
+	d.emit("}")
+	d.emit("data = tail")
+	d.emit("}")
+
 	d.overflow.Add(1)
 }