Don't use sizeof() on a pointer when we really wanted to measure

the length of the array.

Noticed by:	Christos Zoulas <christos@ZOULAS.COM>
Obtained from:	OpenBSD

libexec/telnetd/ext.h

@@ -87,7 +87,7 @@ extern char *unptyip;  /* pointer to remaining characters in buffer */
 #endif
 
 extern int	pty, net;
-extern char	*line;
+extern char	line[16];
 extern int	SYNCHing;		/* we are in TELNET SYNCH mode */
 
 #ifndef	P

libexec/telnetd/sys_term.c

@@ -480,14 +480,10 @@ getnpty()
  *
  * Returns the file descriptor of the opened pty.
  */
-#ifndef	__GNUC__
-char *line = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
-#else
-static char Xline[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
-char *line = Xline;
-#endif
 #ifdef	CRAY
-char *myline = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
+char myline[16];
+#else
+char line[16];
 #endif	/* CRAY */
 
 	int

libexec/telnetd/telnetd.c

@@ -805,7 +805,6 @@ doit(who)
 #else
 	for (;;) {
 		char *lp;
-		extern char *line, *getpty();
 
 		if ((lp = getpty()) == NULL)
 			fatal(net, "Out of ptys");