Bugfix auth_pam module

ngx_module_t commands array should end with a ngx_null_command.

Closes #721702

debian/changelog

@@ -16,6 +16,8 @@ nginx (1.4.2-1) UNRELEASED; urgency=low
   * debian/nginx-common.nginx.init:
     + Better pidfile extraction from nginx.conf. We now accept multiple
       spaces and tabs as a field seperator.
+  * debian/modules/nginx-auth-pam:
+    + Fixed upstream bug. (Closes: #721702)
 
  -- Christos Trochalakis <yatiohi@ideopolis.gr>  Sat, 14 Sep 2013 10:39:24 +0300
 

debian/modules/nginx-auth-pam/ngx_http_auth_pam_module.c

@@ -72,6 +72,8 @@ static ngx_command_t  ngx_http_auth_pam_commands[] = {
       NGX_HTTP_LOC_CONF_OFFSET,
       offsetof(ngx_http_auth_pam_loc_conf_t, service_name),
       NULL },
+
+    ngx_null_command
 };