fix LTC_EASY test failure

tests/rsa_test.c

@@ -342,11 +342,13 @@ static int _rsa_import_x509(const void *in, unsigned long inlen, void *key)
    return rsa_import_x509(in, inlen, key);
 }
 
+#if defined(LTC_MD2) && defined(LTC_MD5) && defined(LTC_RC2)
 static int _rsa_import_pkcs8(const void *in, unsigned long inlen, void *key)
 {
    return rsa_import_pkcs8(in, inlen, "secret", 6, key);
 }
 #endif
+#endif
 
 int rsa_test(void)
 {
@@ -375,7 +377,9 @@ int rsa_test(void)
 
 #ifdef LTC_TEST_READDIR
    DO(test_process_dir("tests/rsa", &key, _rsa_import_x509, (dir_cleanup_cb)rsa_free, "rsa_test"));
+#if defined(LTC_MD2) && defined(LTC_MD5) && defined(LTC_RC2)
    DO(test_process_dir("tests/rsa-pkcs8", &key, _rsa_import_pkcs8, (dir_cleanup_cb)rsa_free, "rsa_pkcs8_test"));
+#endif
 #endif
 
    DO(_rsa_issue_301(prng_idx));