ash: fix bad interaction of "stty -echo" + ASK_TERMINAL

function                                             old     new   delta
read_line_input                                     4820    4886     +66
put_prompt                                           108      47     -61
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 66/-61)              Total: 5 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1 file changed