shell/math.h: update comments, rearrange struct members for smaller code

function                                             old     new   delta
arith_apply                                         1000     998      -2
evaluate_string                                     1414    1406      -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/2 up/down: 0/-10)             Total: -10 bytes

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

1 files changed, 1 insertions, 1 deletions

diff --git a/shell/math.c b/shell/math.c
index 56f866bf2..6196a6ad9 100644
--- a/shell/math.c
+++ b/shell/math.c
@@ -926,9 +926,9 @@ dbg("    numstack:%d val:%lld '%s'", (int)(numstackptr - numstack), numstackptr[
 arith_t FAST_FUNC
 arith(arith_state_t *math_state, const char *expr)
 {
+        math_state->evaluation_disabled = 0;
         math_state->errmsg = NULL;
         math_state->list_of_recursed_names = NULL;
-        math_state->evaluation_disabled = 0;
         return evaluate_string(math_state, expr);
 }