PRC Huffman encoding missing root in code bitstream

[t3dr0]

PRC Huffman missing a code bit representing the tree's root
ISO 14739-1:2014 Table 345 Encoding shows "value", "code", "code length".
It appears these codes leave out the root.

A proposed solution is to amend this table to:

Value	Code	Code Length
3	100	3
7	101	3
5	110	3
1	1110	4
9	1111	4

where the highest bit in the code represents the root of the table.