collatejson: Fix incorrect decode of MissingLiteral
collatejson: Fix incorrect decode of MissingLiteral

MissingLiteral should be json string encoded as part of
collatejson decode.

Change-Id: I78665868333871669d84719b95e680b8c75bf058

jchris/indexing,jchris/indexing,jchris/indexing,jchris/indexing