ssl-iostream: ssl_iostream_destroy(NULL) should be a no-op

diff --git a/src/lib-ssl-iostream/iostream-ssl.c b/src/lib-ssl-iostream/iostream-ssl.c
index aaa01ac77c2e96ea79885ac4a2a2f27b516d4185..b9cf2c760628221b3352d164c7efc129a3513c51 100644 (file)
--- a/src/lib-ssl-iostream/iostream-ssl.c
+++ b/src/lib-ssl-iostream/iostream-ssl.c
@@ -161,6 +161,10 @@ void ssl_iostream_destroy(struct ssl_iostream **_ssl_io)
 {
        struct ssl_iostream *ssl_io = *_ssl_io;
 
+       if (_ssl_io == NULL || *_ssl_io == NULL)
+               return;
+
+       ssl_io = *_ssl_io;
        *_ssl_io = NULL;
        ssl_vfuncs->destroy(ssl_io);
 }