There are only two call sites in the same method, inline it and remove
the unnecessary indirection through ValueTypeCodec -- which any reason
for existence except binding IllegalArgumentCodec vtable.
JIRA: MDSAL-704
Change-Id: I11cd0b4f08a1cb8dacd1f66fec9070102ba47889 Signed-off-by: Robert Varga <robert.varga@pantheon.tech>