allowedips: indicate to clang-analyzer that trie is non-null

We check it in the block just above the only call to node_placement, so
we're certain this is the case.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/allowedips.c b/src/allowedips.c
index 2c91271..282b819 100644
--- a/src/allowedips.c
+++ b/src/allowedips.c
@@ -170,6 +170,7 @@ static __always_inline struct wireguard_peer *lookup(struct allowedips_node __rc
 	return peer;
 }
 
+__attribute__((nonnull(1)))
 static inline bool node_placement(struct allowedips_node __rcu *trie, const u8 *key, u8 cidr, u8 bits, struct allowedips_node **rnode, struct mutex *lock)
 {
 	bool exact = false;