Whitespace: fix long lines in lwt_process.ml
Whitespace: fix long lines in lwt_process.ml

[skip ci]

rneswold/lwt,ocsigen/lwt,c-cube/lwt,rneswold/lwt,c-cube/lwt,ocsigen/lwt,c-cube/lwt,rneswold/lwt,ocsigen/lwt