Fix printed output of some selftests
diff --git a/library/hmac_drbg.c b/library/hmac_drbg.c
index 072f5f7..4f31421 100644
--- a/library/hmac_drbg.c
+++ b/library/hmac_drbg.c
@@ -408,10 +408,7 @@
 /* Dummy checkup routine */
 int mbedtls_hmac_drbg_self_test( int verbose )
 {
-
-    if( verbose != 0 )
-        mbedtls_printf( "\n" );
-
+    (void) verbose;
     return( 0 );
 }
 #else