rstudio/rstudio — comment on commit 00869ca57816f7682097f17e4cb403923f365da7
File: src/cpp/core/json/JsonRpc.cpp line 197
By jjallaire:

You could just assign the value of clientInfo unconditionally here (that will result in a null value in the json object). Not sure if it makes a difference on the client side coding for "missing" value vs. null (I'm thinking it doesn't)