shell/math: return string error indicator, not integer

function                                             old     new   delta
expand_and_evaluate_arith                             87     106     +19
expand_one_var                                      1563    1570      +7
arith                                                 12      18      +6
evaluate_string                                      678     680      +2
arith_apply                                         1269    1271      +2
builtin_umask                                        133     132      -1
ash_arith                                            118      75     -43
expand_vars_to_list                                 1094    1038     -56
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 5/3 up/down: 36/-100)           Total: -64 bytes

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/shell/math.h b/shell/math.h
index e34b65d5d..2dcab130d 100644
--- a/shell/math.h
+++ b/shell/math.h
@@ -95,7 +95,7 @@ typedef void        FAST_FUNC (*arith_var_set_t)(const char *name, const char *v
 //typedef const char* FAST_FUNC (*arith_var_endofname_t)(const char *name);
 
 typedef struct arith_state_t {
-	int                   errcode;
+	const char           *errmsg;
 	arith_var_lookup_t    lookupvar;
 	arith_var_set_t       setvar;
 //	arith_var_endofname_t endofname;