save errno in signal handler

src/lib/libutil/passwd.c

@@ -1,4 +1,4 @@
-/*	$OpenBSD: passwd.c,v 1.28 2001/08/26 03:28:30 millert Exp $	*/
+/*	$OpenBSD: passwd.c,v 1.29 2001/11/14 19:50:23 deraadt Exp $	*/
 
 /*
  * Copyright (c) 1987, 1993, 1994, 1995
@@ -34,7 +34,7 @@
  */
 
 #if defined(LIBC_SCCS) && !defined(lint)
-static char rcsid[] = "$OpenBSD: passwd.c,v 1.28 2001/08/26 03:28:30 millert Exp $";
+static char rcsid[] = "$OpenBSD: passwd.c,v 1.29 2001/11/14 19:50:23 deraadt Exp $";
 #endif /* LIBC_SCCS and not lint */
 
 #include <sys/types.h>
@@ -336,9 +336,11 @@ static void
 pw_cont(sig)
 	int sig;
 {
+	int save_errno = errno;
 
 	if (editpid != -1)
 		kill(editpid, sig);
+	errno = save_errno;
 }
 
 void