From: Stephen Hemminger <shemminger@vyatta.com>
Date: Tue, 12 Feb 2008 05:12:49 +0000 (-0800)
Subject: fib_trie: handle empty tree
X-Git-Tag: v2.6.25-rc2~2^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ec28cf738d899e9d0652108e1986101771aacb2e;p=pandora-kernel.git

fib_trie: handle empty tree

This fixes possible problems when trie_firstleaf() returns NULL
to trie_leafindex().

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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