- add missing initialization of have_const_functions

[cparser] / parsetest / gnu99 / computed_goto.c

int test(int x) {
        static void *array[] = { &&foo, &&bar, &&hack };

        goto *array[x];
foo:    return 1;
bar:    return 2;
hack:   return 3;
}

int main(int argc, char *argv[]) {
        return test(1) == 2 ? 0 : 1;
}