fix bug - need to read final message in daisy chain to avoid hang
fix bug - need to read final message in daisy chain to avoid hang

R=rsc
OCL=13840
CL=13840

npe9/noahevans-go9,rdp/rogerpack2005-golang,sanjosh/sanjos100-tipc,webfd/go-zh,mhennings/marcohennings-go,d0f/go-zh,glycerine/jeaten-go-arrayof-structof,webfd/go-zh,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,webfd/go-zh,rdp/rogerpack2005-golang,d0f/go-zh,Triskite/willstone-goclone,scirelli/scirelli-go,bryanxu/go-zh,scirelli/scirelli-go,bryanxu/go-zh,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,d0f/go-zh,Triskite/willstone-goclone,sanjosh/sanjos100-tipc,Triskite/willstone-goclone,glycerine/jeaten-go-arrayof-structof,npe9/noahevans-go9,rdp/rogerpack2005-golang,rdp/rogerpack2005-golang,mhennings/marcohennings-go,webfd/go-zh,rflanagan/reginaldflanagan-project1,webfd/go-zh,rflanagan/reginaldflanagan-project1,webfd/go-zh,Triskite/willstone-goclone,scirelli/scirelli-go,glycerine/jeaten-go-arrayof-structof,glycerine/jeaten-go-arrayof-structof,Triskite/willstone-goclone,rflanagan/reginaldflanagan-project1,rflanagan/reginaldflanagan-project1,glycerine/jeaten-go-arrayof-structof,sanjosh/sanjos100-tipc,mhennings/marcohennings-go,webfd/go-zh,rflanagan/reginaldflanagan-project1,scirelli/scirelli-go,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,bryanxu/go-zh,bryanxu/go-zh,rdp/rogerpack2005-golang,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,d0f/go-zh,bryanxu/go-zh,rdp/rogerpack2005-golang,Triskite/willstone-goclone,mhennings/marcohennings-go,rdp/rogerpack2005-golang,bryanxu/go-zh,scirelli/scirelli-go,mhennings/marcohennings-go,scirelli/scirelli-go,bryanxu/go-zh,bryanxu/go-zh,npe9/noahevans-go9,glycerine/jeaten-go-arrayof-structof,d0f/go-zh,npe9/noahevans-go9,Triskite/willstone-goclone,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,rdp/rogerpack2005-golang,d0f/go-zh,scirelli/scirelli-go,rflanagan/reginaldflanagan-project1,npe9/noahevans-go9,webfd/go-zh,scirelli/scirelli-go,Triskite/willstone-goclone,sanjosh/sanjos100-tipc,mhennings/marcohennings-go,npe9/noahevans-go9,npe9/noahevans-go9,mhennings/marcohennings-go,mhennings/marcohennings-go,rflanagan/reginaldflanagan-project1