Fix undeclared dependency on FS_IO in test code
Found by 'all.sh test_no_platform' and by 'tests/scripts/test-ref-configs.pl'.
diff --git a/tests/suites/test_suite_ssl.function b/tests/suites/test_suite_ssl.function
index 44c5f0f..b3f217d 100644
--- a/tests/suites/test_suite_ssl.function
+++ b/tests/suites/test_suite_ssl.function
@@ -283,7 +283,7 @@
memset( session->id, 66, session->id_len );
memset( session->master, 17, sizeof( session->master ) );
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_X509_CRT_PARSE_C) && defined(MBEDTLS_FS_IO)
if( strlen( crt_file ) != 0 )
{
int ret;