Fix indentation in debug statement in ssl_msg.c

Signed-off-by: Hanno Becker <hanno.becker@arm.com>
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 2c29656..33e9a4e 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -851,7 +851,7 @@
                                           transform->minor_ver );
 
         MBEDTLS_SSL_DEBUG_BUF( 4, "IV used (internal)",
-                                  iv, transform->ivlen );
+                               iv, transform->ivlen );
         MBEDTLS_SSL_DEBUG_BUF( 4, "IV used (transmitted)",
                                data - dynamic_iv_len * dynamic_iv_is_explicit,
                                dynamic_iv_len * dynamic_iv_is_explicit );