ash: change "clear ungetc counter on syntax errors" fix to match dash

function                                             old     new   delta
ash_main                                            1203    1210      +7
raise_exception                                       39      26     -13
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(add/remove: 0/0 grow/shrink: 1/1 up/down: 7/-13)              Total: -6 bytes

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