Fix #462: /dev/pts mounted with wrong mode

Before this fix:

    admin@infix:~$ sudo ls -la /dev/pts/
    total 0
    drwxr-xr-x    2 root     root             0 Dec 24 08:16 .
    drwxr-xr-x   13 root     root         13340 Dec 24 08:16 ..
    cr--------    1 root     tty       136,   0 Dec 24 08:18 0
    crw-rw-rw-    1 root     root        5,   2 Dec 24 08:16 ptmx
    admin@infix:~$ mount | grep devpts
    devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=400,ptmxmode=666)

After:

    admin@infix-00-00-00:~$ sudo ls -l /dev/pts/
    total 0
    crw--w----    1 root     tty       136,   0 Dec 24 08:21 0
    crw-rw-rw-    1 root     root        5,   2 Dec 24 08:20 ptmx
    admin@infix-00-00-00:~$ mount |grep pts
    devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=666)

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/finit.c

@@ -371,7 +371,6 @@ static void fs_finalize(void)
 	/* Modern systems use /dev/pts */
 	if (!fismnt("/dev/pts")) {
 		char opts[32];
-		int mode;
 		int gid;
 
 		gid = getgroup("tty");
@@ -379,8 +378,7 @@ static void fs_finalize(void)
 			gid = 0;
 
 		/* 0600 is default on Debian, use 0620 to get mesg y by default */
-		mode = 0620;
+		snprintf(opts, sizeof(opts), "gid=%d,mode=0620,ptmxmode=0666", gid);
-		snprintf(opts, sizeof(opts), "gid=%d,mode=%d,ptmxmode=0666", gid, mode);
 
 		makedir("/dev/pts", 0755);
 		fs_mount("devpts", "/dev/pts", "devpts", flags, opts);