fix adding all tokens to array in an enum_specifier rule

src/parser/parser.yc

@@ -704,6 +704,7 @@ enum_specifier
         $$->list->push_back($1);
         $$->list->push_back($2);
         $$->list->push_back($3);
+        $$->list->push_back($4);
     }
     | ENUM IDENTIFIER LCURLY enumerator_list RCURLY {
         $$ = new Node(NODE_TYPE_LIST);