enable AlpnError for boringssl

Author: zh-jq

openssl/src/ssl/mod.rs

@@ -657,16 +657,16 @@ impl SslAlert {
 /// An error returned from an ALPN selection callback.
 ///
 /// Requires OpenSSL 1.0.2 or LibreSSL 2.6.1 or newer.
-#[cfg(any(ossl102, libressl261))]
+#[cfg(any(ossl102, libressl261, boringssl))]
 #[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub struct AlpnError(c_int);
 
-#[cfg(any(ossl102, libressl261))]
+#[cfg(any(ossl102, libressl261, boringssl))]
 impl AlpnError {
     /// Terminate the handshake with a fatal alert.
     ///
     /// Requires OpenSSL 1.1.0 or newer.
-    #[cfg(ossl110)]
+    #[cfg(any(ossl110, boringssl))]
     pub const ALERT_FATAL: AlpnError = AlpnError(ffi::SSL_TLSEXT_ERR_ALERT_FATAL);
 
     /// Do not select a protocol, but continue the handshake.