Demo style fixes and modernisation.

Address some style issues in the demos and modernise the C.
Fix the exit/return from main handling.

Reviewed-by: Andy Polyakov <appro@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/3914)

1 files changed, 6 insertions, 7 deletions

diff --git a/demos/bio/server-arg.c b/demos/bio/server-arg.c
index 6056969fe9..d80d070f7a 100644
--- a/demos/bio/server-arg.c
+++ b/demos/bio/server-arg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2013-2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2013-2017 The OpenSSL Project Authors. All Rights Reserved.
  *
  * Licensed under the OpenSSL license (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
@@ -16,6 +16,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <signal.h>
+#include <stdlib.h>
 #include <openssl/err.h>
 #include <openssl/ssl.h>
 
@@ -27,7 +28,7 @@ int main(int argc, char *argv[])
     SSL_CONF_CTX *cctx;
     char buf[512];
     BIO *in = NULL;
-    int ret = 1, i;
+    int ret = EXIT_FAILURE, i;
     char **args = argv + 1;
     int nargs = argc - 1;
 
@@ -134,12 +135,10 @@ int main(int argc, char *argv[])
         fflush(stdout);
     }
 
-    ret = 0;
+    ret = EXIT_SUCCESS;
  err:
-    if (ret) {
+    if (ret != EXIT_SUCCESS)
         ERR_print_errors_fp(stderr);
-    }
     BIO_free(in);
-    exit(ret);
-    return (!ret);
+    return ret;
 }