anvil: Make admin_client_unref(&NULL) no-op

diff --git a/src/anvil/admin-client.c b/src/anvil/admin-client.c
index 19612dae184482e83b250768dc9c3c0c91e3ad0d..57b6699d99de4930a6deb713cf3ed00cb78714cf 100644 (file)
--- a/src/anvil/admin-client.c
+++ b/src/anvil/admin-client.c
@@ -77,6 +77,8 @@ void admin_client_unref(struct admin_client **_client)
        struct admin_client *client = *_client;
        struct admin_client_command *cmd;
 
+       if (client == NULL)
+               return;
        *_client = NULL;
 
        i_assert(client->refcount > 0);