journald: use free_and_replace() where appropriate

diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
index 286dda29716b2915171d71ad927604c5bfe948d2..ad0d2f7349b8c234c1b35fbeecd4deb2318935a7 100644 (file)
--- a/src/journal/journald-server.c
+++ b/src/journal/journald-server.c
@@ -741,8 +741,7 @@ static void server_cache_hostname(Server *s) {
         if (!x)
                 return;
 
-        free(s->hostname_field);
-        s->hostname_field = x;
+        free_and_replace(s->hostname_field, x);
 }
 
 static bool shall_try_append_again(JournalFile *f, int r) {