Fixed warnings in case POLARSSL_X509_PARSE_C is not defined
diff --git a/tests/suites/test_suite_debug.function b/tests/suites/test_suite_debug.function
index 6448f26..dba9c5e 100644
--- a/tests/suites/test_suite_debug.function
+++ b/tests/suites/test_suite_debug.function
@@ -22,7 +22,7 @@
  * END_DEPENDENCIES
  */
 
-/* BEGIN_CASE depends_on:POLARSSL_FS_IO */
+/* BEGIN_CASE depends_on:POLARSSL_FS_IO:POLARSSL_X509_PARSE_C */
 void debug_print_crt( char *crt_file, char *file, int line, char *prefix,
                       char *result_str )
 {