TLSSocketWrapper: accept positive result for parse_certificates

Author: facchinm

features/netsocket/TLSSocketWrapper.cpp

@@ -113,7 +113,7 @@ nsapi_error_t TLSSocketWrapper::set_root_ca_cert(const void *root_ca, size_t len
         ret = mbedtls_x509_crt_parse(crt, static_cast<const unsigned char *>(root_ca), len);
         break;
     }
-    if (ret != 0) {
+    if (ret < 0) {
         print_mbedtls_error("mbedtls_x509_crt_parse", ret);
         mbedtls_x509_crt_free(crt);
         delete crt;