ash: code shrink

ash: code shrink

function                                             old     new   delta
copynode                                             171     180      +9
evaltreenr                                           615     621      +6
evaltree                                             615     621      +6
calcsize                                             121     127      +6
evalpipe                                             349     350      +1
redirect                                            1059    1057      -2
parseheredoc                                         129     126      -3
makename                                              35      32      -3
expredir                                             130     127      -3
parsefname                                           224     219      -5
popstring                                            140     134      -6
pipeline                                             276     268      -8
list                                                 360     351      -9
readtoken1                                          3157    3130     -27
parse_command                                       1504    1460     -44
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/10 up/down: 28/-110)          Total: -82 bytes