(output_data): make sure of not forwarding `nfrontp' too far, thereby allowing writes after the end of `netobuf'
(output_data): make sure of not forwarding `nfrontp' too far, thereby
allowing writes after the end of `netobuf'


git-svn-id: 193148810cf65385f3a195dbc9a8b504846da3a2@10354 ec53bebd-3082-4978-b11e-865c3cabbd6b

madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal,madscientist159/heimdal