New patch 0007-nwfilter-Don-t-crash-if-driverState-NULL.patch

nwfilter: Don't crash if driverState == NULL

Closes: #577728

debian/patches/0007-nwfilter-Don-t-crash-if-driverState-NULL.patch

+From: =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
+Date: Mon, 19 Apr 2010 18:06:05 +0200
+Subject: [PATCH] nwfilter: Don't crash if driverState == NULL
+
+Origin: Upstream
+Closes: #577728
+---
+ src/nwfilter/nwfilter_driver.c |   11 +++++++++--
+ 1 files changed, 9 insertions(+), 2 deletions(-)
+
+diff --git a/src/nwfilter/nwfilter_driver.c b/src/nwfilter/nwfilter_driver.c
+index f237b7c..9fbfaa7 100644
+--- a/src/nwfilter/nwfilter_driver.c
++++ b/src/nwfilter/nwfilter_driver.c
+@@ -161,9 +161,16 @@ nwfilterDriverReload(void) {
+  */
+ static int
+ nwfilterDriverActive(void) {
+-    if (!driverState->pools.count)
++    int ret;
++
++    if (!driverState)
+         return 0;
+-    return 1;
++
++    nwfilterDriverLock(driverState);
++    ret = driverState->pools.count ? 1 : 0;
++    nwfilterDriverUnlock(driverState);
++
++    return ret;
+ }
+ 
+ /**
+--