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-rw-r--r--lib/rules/api.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rules/api.c b/lib/rules/api.c
index 2725e9a4..c4e25450 100644
--- a/lib/rules/api.c
+++ b/lib/rules/api.c
@@ -865,7 +865,7 @@ static int subnet_encode(const struct sockaddr *addr, int sub_len, uint8_t buf[3
}
// Is `a` subnet-prefix of `b`? (a byte format of subnet_encode())
-bool subnet_is_prefix(uint8_t a, uint8_t b)
+static bool subnet_is_prefix(uint8_t a, uint8_t b)
{
while (true) {
if (a >> 6 == 0)