move 'kDevNull' constant to define
move 'kDevNull' constant to define

jrnold/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jar1karp/rstudio,jar1karp/rstudio,jar1karp/rstudio,jar1karp/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,JanMarvin/rstudio,jrnold/rstudio,jrnold/rstudio,jar1karp/rstudio,jar1karp/rstudio,jrnold/rstudio,JanMarvin/rstudio,jrnold/rstudio,jar1karp/rstudio,JanMarvin/rstudio,jrnold/rstudio,jrnold/rstudio,jar1karp/rstudio,jrnold/rstudio