From 4ec7afe5a8621a111b05ab2b42179cb623f19369 Mon Sep 17 00:00:00 2001
From: Otto van der Schaaf <oschaaf@we-amp.com>
Date: Mon, 15 Feb 2016 10:52:51 +0100
Subject: [PATCH] Fix shutdown when ngx_pagespeed is completely disabled.

Fixes https://github.com/pagespeed/ngx_pagespeed/issues/1120
---
 src/ngx_pagespeed.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/ngx_pagespeed.cc b/src/ngx_pagespeed.cc
index 675f662aa..3ae79611d 100644
--- a/src/ngx_pagespeed.cc
+++ b/src/ngx_pagespeed.cc
@@ -3067,7 +3067,9 @@ void ps_exit_child_process(ngx_cycle_t* cycle) {
   ps_main_conf_t* cfg_m = static_cast<ps_main_conf_t*>(
       ngx_http_cycle_get_module_main_conf(cycle, ngx_pagespeed));
   NgxBaseFetch::Terminate();
-  cfg_m->driver_factory->ShutDown();
+  if (cfg_m->driver_factory != NULL) {
+    cfg_m->driver_factory->ShutDown();
+  }
 }
 
 // Called when nginx forks worker processes.  No threads should be started