Do no test net_usleep() when not defined
diff --git a/library/timing.c b/library/timing.c
index 19ccb9a..94be0ad 100644
--- a/library/timing.c
+++ b/library/timing.c
@@ -333,7 +333,7 @@
#if defined(POLARSSL_SELF_TEST)
/* To test net_usleep against our functions */
-#if defined(POLARSSL_NET_C)
+#if defined(POLARSSL_NET_C) && defined(POLARSSL_HAVE_TIME)
#include "polarssl/net.h"
#endif
@@ -465,7 +465,7 @@
if( verbose != 0 )
polarssl_printf( "passed\n" );
-#if defined(POLARSSL_NET_C)
+#if defined(POLARSSL_NET_C) && defined(POLARSSL_HAVE_TIME)
if( verbose != 0 )
polarssl_printf( " TIMING test #4 (net_usleep/ get_timer): " );