lib-ssl-iostream: Close the plain iostreams when ssl-iostream is destroyed.

diff --git a/src/lib-ssl-iostream/iostream-openssl.c b/src/lib-ssl-iostream/iostream-openssl.c
index dcef1661be3e1154a9c9f1813d9b2db034522d24..32156994a5c8f2b59c510567cd07a1d6551ec571 100644 (file)
--- a/src/lib-ssl-iostream/iostream-openssl.c
+++ b/src/lib-ssl-iostream/iostream-openssl.c
@@ -294,6 +294,10 @@ static void openssl_iostream_destroy(struct ssl_iostream *ssl_io)
        (void)SSL_shutdown(ssl_io->ssl);
        (void)openssl_iostream_more(ssl_io);
        (void)o_stream_flush(ssl_io->plain_output);
+       /* close the plain i/o streams, because their fd may be closed soon,
+          but we may still keep this ssl-iostream referenced until later. */
+       i_stream_close(ssl_io->plain_input);
+       o_stream_close(ssl_io->plain_output);
 
        ssl_iostream_unref(&ssl_io);
 }