This fixes
../screen-4.6.2/pty.c: In function 'OpenPTY':
../screen-4.6.2/pty.c:328:7: warning: implicit declaration of function 'openpty'; did you mean 'openat'? [-Wimplicit-function-declaration]
   if (openpty(&f, &s, TtyName, NULL, NULL) != 0)
       ^~~~~~~

Signed-off-by: Amadeusz Sławiński <amade@asmblr.net>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Upstream-Status: Backport

---
 pty.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/pty.c b/pty.c
index 1c0660e..502338f 100644
--- a/pty.c
+++ b/pty.c
@@ -47,11 +47,7 @@
 # include <sys/ttold.h>
 #endif
 
-#ifdef ISC
-# include <sys/tty.h>
-# include <sys/sioctl.h>
-# include <sys/pty.h>
-#endif
+#include <pty.h>
 
 #ifdef sgi
 # include <sys/sysmacros.h>