ripper: Move assign_error call to assignable
assign_error
assignable
Prepare lhs as $:$ before assignable and update it there. Remove ripper_assignable which is no longer used.
lhs
$:$
ripper_assignable
ripper: Move
assign_errorcall toassignablePrepare
lhsas$:$beforeassignableand update it there.Remove
ripper_assignablewhich is no longer used.