virtlogd: Fix a couple minor memory leaks

https://bugzilla.redhat.com/show_bug.cgi?id=1303885
(cherry picked from commit cdced012)

src/logging/log_daemon.c

@@ -1212,6 +1212,8 @@ int main(int argc, char **argv) {
     VIR_FREE(sock_file);
     VIR_FREE(state_file);
     VIR_FREE(run_dir);
+    VIR_FREE(remote_config_file);
+    virLogDaemonConfigFree(config);
     return ret;
 
  no_memory: