fix coding style issues

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/library/ssl_tls13_client.c b/library/ssl_tls13_client.c
index 7b26bbb..c3ee44d 100644
--- a/library/ssl_tls13_client.c
+++ b/library/ssl_tls13_client.c
@@ -689,7 +689,7 @@
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
     /* Check if a ticket has been configured. */
-    if( ssl->session_negotiate != NULL         &&
+    if( ssl->session_negotiate != NULL &&
         ssl->session_negotiate->ticket != NULL )
     {
 #if defined(MBEDTLS_HAVE_TIME)