[EXPAND] Fix ifsfirst/ifslastp leak

As it stands expandarg may return with a non-NULL ifslastp which
then confuses any subsequent ifsbreakup user that doesn't clear
it directly.

What's worse, if we get interrupted before we hit ifsfree in
expandarg we will leak memory.

This patch fixes this by always calling ifsfree in expandarg
thus ensuring that ifslastp is always NULL on the normal path.
It also adds an ifsfree call to the RESET path to ensure that
memory isn't leaked.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 4 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 3c26149..a51975c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2010-09-08  Herbert Xu <herbert@gondor.apana.org.au>
+
+	* Fix ifsfirst/ifslastp leak.
+
 2010-09-08  maximilian attems <max@stro.at>
 
 	* Debug compile fix.