Fix printer_test.go to invoke Fprint as a method of cfg. This matches the change to printer.go in revision 3632.
Fix printer_test.go to invoke Fprint as a method of cfg.
This matches the change to printer.go in revision 3632.

R=gri
http://go/go-review/1015001

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