Add a trivial patch to fix screen compiles on post-pmtx FreeBSD 7-current

systems.

Approved by: maintainer timeout

sysutils/screen/files/patch-pty.c

@@ -0,0 +1,15 @@
+--- pty.c.orig	Mon Feb  6 18:54:37 2006
++++ pty.c	Mon Feb  6 18:56:50 2006
+@@ -33,10 +33,12 @@
+ # include <sys/ioctl.h>
+ #endif
+ 
++#ifndef __FreeBSD__
+ /* for solaris 2.1, Unixware (SVR4.2) and possibly others */
+ #ifdef HAVE_SVR4_PTYS
+ # include <sys/stropts.h>
+ #endif
++#endif
+ 
+ #if defined(sun) && defined(LOCKPTY) && !defined(TIOCEXCL)
+ # include <sys/ttold.h>