simplify terminal check - scroll - scrollbackbuffer program for st
 (HTM) git clone git://git.suckless.org/scroll
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       ---
 (DIR) commit aa683cbd8388e9bd3ae2c961a9fce47d519e2d2f
 (DIR) parent d1c2d2ad0efb4d029ed130443ea88095e153639e
 (HTM) Author: Jan Klemkow <j.klemkow@wemelug.de>
       Date:   Tue, 14 Apr 2020 21:23:20 +0200
       
       simplify terminal check
       
       Diffstat:
         M scroll.c                            |       6 ++----
       
       1 file changed, 2 insertions(+), 4 deletions(-)
       ---
 (DIR) diff --git a/scroll.c b/scroll.c
       @@ -402,10 +402,8 @@ main(int argc, char *argv[])
        
                TAILQ_INIT(&head);
        
       -        if (isatty(STDIN_FILENO) == 0)
       -                die("stdin it not a tty");
       -        if (isatty(STDOUT_FILENO) == 0)
       -                die("stdout it not a tty");
       +        if (isatty(STDIN_FILENO) == 0 || isatty(STDOUT_FILENO) == 0)
       +                die("parent it not a tty");
        
                /* save terminal settings for resetting after exit */
                if (tcgetattr(STDIN_FILENO, &dfl) == -1)