$NetBSD$

--- src/syscall.c.orig	2006-01-24 17:39:48.000000000 +0000
+++ src/syscall.c
@@ -164,7 +164,6 @@ int system_call(string, options)
 #ifdef SIGTSTP
     register SIGHAND_TYPE (*oldstop)(), (*oldstart)();
 #endif
-    extern int errno;
     
     /* flush any pending output */
     FlushBuffer();
