node.h: Avoid a magic number to represent excessed comma

`(ID)1` was assigned to NODE_ARGS#rest_arg for `{|x,| }`.
This change removes the magic number by introducing an explicit macro
variable for it: NODE_SPECIAL_EXCESSED_COMMA.

1 files changed, 2 insertions, 6 deletions

diff --git a/parse.y b/parse.y
index a35b526ab3..4446a29fa3 100644
--- a/parse.y
+++ b/parse.y
@@ -325,10 +325,6 @@ static int parser_yyerror(struct parser_params*, const YYLTYPE *yylloc, const ch
 
 #define lambda_beginning_p() (p->lex.lpar_beg == p->lex.paren_nest)
 
-#ifndef RIPPER
-static const ID excessed_comma = 1;
-#endif
-
 static enum yytokentype yylex(YYSTYPE*, YYLTYPE*, struct parser_params*);
 
 #ifndef RIPPER
@@ -3261,7 +3257,7 @@ block_param	: f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail
 		    {
 		    /*%%%*/
 			/* magic number for rest_id in iseq_set_arguments() */
-			$$ = new_args(p, $1, Qnone, excessed_comma, Qnone, new_args_tail(p, Qnone, Qnone, Qnone, &@1), &@$);
+			$$ = new_args(p, $1, Qnone, NODE_SPECIAL_EXCESSED_COMMA, Qnone, new_args_tail(p, Qnone, Qnone, Qnone, &@1), &@$);
 		    /*% %*/
 		    /*% ripper: new_args(p, $1, Qnone, excessed_comma!, Qnone, new_args_tail(p, Qnone, Qnone, Qnone, NULL), NULL) %*/
 		    }
@@ -11134,7 +11130,7 @@ args_with_numbered(struct parser_params *p, NODE *args, int max_numparam)
     if (max_numparam > 0) {
 	if (!args) args = new_args_tail(p, 0, 0, 0, 0);
 	args->nd_ainfo->pre_args_num = max_numparam;
-	args->nd_ainfo->rest_arg = excessed_comma;
+	args->nd_ainfo->rest_arg = NODE_SPECIAL_EXCESSED_COMMA;
     }
     return args;
 }