Vincent Dupont 669a6922f3 sys/shell: fix build when SHELL_NO_ECHO is defined
When SHELL_NO_ECHO was defined and not SHELL_NO_PROMPT build was broken
because _putchar was not defined.
This define _putchar when one of SHELL_NO_PROMPT or SHELL_NO_ECHO is not
defined.
2017-05-04 15:49:22 +02:00
..