no need to declare "extern optarg" and "extern optind"

when <unistd.h> is included;
patch from Jan Stary <hans at stare dot cz>;
OK millert

3 files changed, 3 insertions, 9 deletions

diff --git a/src/regress/lib/libc/db/dbtest.c b/src/regress/lib/libc/db/dbtest.c
index 6a79e4c187..57bb900f7a 100644
--- a/src/regress/lib/libc/db/dbtest.c
+++ b/src/regress/lib/libc/db/dbtest.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: dbtest.c,v 1.16 2017/07/27 15:08:37 bluhm Exp $       */
+/*      $OpenBSD: dbtest.c,v 1.17 2020/02/14 19:17:33 schwarze Exp $    */
 /*      $NetBSD: dbtest.c,v 1.8 1996/05/03 21:57:48 cgd Exp $   */
 
 /*-
@@ -76,8 +76,6 @@ int XXlineno;				/* Fast breakpoint for gdb. */
 int
 main(int argc, char *argv[])
 {
-        extern int optind;
-        extern char *optarg;
         enum S command, state;
         DB *dbp;
         DBT data, key, keydata;
diff --git a/src/regress/lib/libc/getaddrinfo/gaitest.c b/src/regress/lib/libc/getaddrinfo/gaitest.c
index 12a4498459..2508c05e02 100644
--- a/src/regress/lib/libc/getaddrinfo/gaitest.c
+++ b/src/regress/lib/libc/getaddrinfo/gaitest.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: gaitest.c,v 1.6 2009/06/09 18:15:08 phessler Exp $    */
+/*      $OpenBSD: gaitest.c,v 1.7 2020/02/14 19:17:33 schwarze Exp $    */
 /*      $NetBSD: gaitest.c,v 1.3 2002/07/05 15:47:43 itojun Exp $       */
 
 /*
@@ -119,8 +119,6 @@ main(argc, argv)
         struct addrinfo *res;
         int error, i;
         char *p, *q;
-        extern int optind;
-        extern char *optarg;
         int c;
         char nbuf[10];
 
diff --git a/src/regress/lib/libc/regex/main.c b/src/regress/lib/libc/regex/main.c
index d6787d88fc..50c3f7589e 100644
--- a/src/regress/lib/libc/regex/main.c
+++ b/src/regress/lib/libc/regex/main.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: main.c,v 1.10 2016/07/13 06:17:11 guenther Exp $      */
+/*      $OpenBSD: main.c,v 1.11 2020/02/14 19:17:34 schwarze Exp $      */
 /*      $NetBSD: main.c,v 1.2 1995/04/20 22:39:51 cgd Exp $     */
 
 #include <stdio.h>
@@ -41,8 +41,6 @@ main(int argc, char *argv[])
         int c;
         int errflg = 0;
         register int i;
-        extern int optind;
-        extern char *optarg;
 
         progname = argv[0];