fundamental: rework IN_SET() to require at least three arguments

If less than three parameters are passed a simple comparison is the
better choice.

Lo and behold this found two pretty bad typos.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/resolve/resolved-dns-rr.h b/src/resolve/resolved-dns-rr.h
index d558842c0e..024cfb8744 100644
--- a/src/resolve/resolved-dns-rr.h
+++ b/src/resolve/resolved-dns-rr.h
@@ -320,7 +320,7 @@ ssize_t dns_resource_record_payload(DnsResourceRecord *rr, void **out);
 DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceKey*, dns_resource_key_unref);
 
 static inline bool dns_key_is_shared(const DnsResourceKey *key) {
-        return IN_SET(key->type, DNS_TYPE_PTR);
+        return key->type == DNS_TYPE_PTR;
 }
 
 bool dns_resource_key_reduce(DnsResourceKey **a, DnsResourceKey **b);