value computed is not used [-Wunused-value]

[MikhailPasechnik]

Пофиксить в ft_printf и откатить коммит c97151b

gcc -Wall -Wextra -I ./include -o obj/pf_parse.o -c src/pf_parse.c
src/pf_parse.c: In function ‘post_parse’:
src/pf_parse.c:81:26: warning: value computed is not used [-Wunused-value]
   (f->flg |= PF_F_LEFTJ) && (f->pad *= -1);
                          ^~
src/pf_parse.c:83:18: warning: value computed is not used [-Wunused-value]
   !(f->prc *= 0) && (f->flg &= ~PF_F_PRC);
                  ^~