Fix bug in rustls-no-provider

Author: algesten

CHANGELOG.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+  * Fix bug in `rustls-no-provider` when disabling ring (#973)
+
 # 3.0.3
 
   * Use the same data in CONNECT and Host header for proxied requests (#967)

src/tls/rustls.rs

@@ -98,7 +98,7 @@ fn build_config(tls_config: &TlsConfig) -> Arc<ClientConfig> {
         .rustls_crypto_provider
         .clone()
         .or(rustls::crypto::CryptoProvider::get_default().cloned())
-        .unwrap_or(ring_if_enabled());
+        .unwrap_or_else(ring_if_enabled);
 
     #[cfg(feature = "_ring")]
     fn ring_if_enabled() -> Arc<CryptoProvider> {