login-common: Make login_proxy_free(&NULL) no-op

Backport of 92b12678ff85112a0631f58fc2c9422e41e0d376

diff --git a/src/login-common/login-proxy.c b/src/login-common/login-proxy.c
index 1fdb3f0fcee0a13471e57bb90c8ce3f6cb6454b5..9dfe88de74147ad0604b807c0edd4925a200fd6a 100644 (file)
--- a/src/login-common/login-proxy.c
+++ b/src/login-common/login-proxy.c
@@ -600,6 +600,8 @@ login_proxy_free_full(struct login_proxy **_proxy, const char *log_msg,
 void login_proxy_free(struct login_proxy **_proxy)
 {
        struct login_proxy *proxy = *_proxy;
+       if (proxy == NULL)
+               return;
 
        i_assert(!proxy->detached || proxy->client->destroyed);
        /* Note: The NULL error is never even attempted to be used here. */