systat is not flushing output

[Solene Rapenne]

I wanted to use systat -b -d 10 iostat 1 | something to parse output in
real time but it was not possible, systat doesn't flush output.

otto@ suggested this change, I tried it and it works.

This flush output at the end of writing a page in raw mode (-B or -b
flags).

ok?

Index: engine.c
===================================================================
RCS file: /data/cvs/src/usr.bin/systat/engine.c,v
retrieving revision 1.23
diff -u -p -r1.23 engine.c
--- engine.c    17 Jan 2019 05:56:29 -0000      1.23
+++ engine.c    19 Jul 2019 15:03:28 -0000
@@ -245,6 +245,7 @@ end_page(void)
        if (rawmode) {
                linepos = 0;
                clear_linebuf();
+        fflush(stdout);
        } else {
                move(home_line, 0);
                print_cmdline();