commit d485640b8083aea895ecf31b4ea6a338ee561b67
author Viktor Szakats <vszakats@users.noreply.github.com> Tue Aug 30 03:01:16 2016 +0200
committer Rich Salz <rsalz@openssl.org> Tue Sep 13 09:14:15 2016 -0400
tree cb6a906035616c54da6116b7f3d29eeddc48ea77
parent 35c11bfc69e6b90fd1c4c4ca6ad3f500584ca939

s_client: avoid warning on Windows/MS-DOS systems

it appears when using gcc/mingw:
```
apps/s_client.c:815:9: warning: variable 'at_eof' set but not used [-Wunused-but-set-variable]
     int at_eof = 0;
         ^~~~~~
```
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/1512)

apps/s_client.c

diff --git a/apps/s_client.c b/apps/s_client.c
index f43a578..9c83d64 100644
--- a/apps/s_client.c
+++ b/apps/s_client.c
@@ -812,7 +812,9 @@
     int socket_family = AF_UNSPEC, socket_type = SOCK_STREAM;
     int starttls_proto = PROTO_OFF, crl_format = FORMAT_PEM, crl_download = 0;
     int write_tty, read_tty, write_ssl, read_ssl, tty_on, ssl_pending;
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
     int at_eof = 0;
+#endif
     int read_buf_len = 0;
     int fallback_scsv = 0;
     long randamt = 0;
@@ -2393,8 +2395,10 @@
             } else
                 i = raw_read_stdin(cbuf, BUFSIZZ);
 
+#if !defined(OPENSSL_SYS_WINDOWS) && !defined(OPENSSL_SYS_MSDOS)
             if (i == 0)
                 at_eof = 1;
+#endif
 
             if ((!c_ign_eof) && ((i <= 0) || (cbuf[0] == 'Q' && cmdletters))) {
                 BIO_printf(bio_err, "DONE\n");