Avoid make_uninit_string() for the command builder's echo_buf. src/ChangeLog addition: 2014-08-03 Aidan Kehoe <kehoea@parhasard.net> * event-stream.c (allocate_command_builder): * event-stream.c (Fnext_event): Use #'make-string rather than make_uninit_string() when allocating the command builder's echo_buf, avoiding having octets in the string that do not correspond to valid internal-format text.