socket-util: Replace sockaddr length macros with functions

There's no need for these to be macros, let's just make them regular
functions instead.

src/resolve/resolved-dns-server.c

@@ -1274,7 +1274,7 @@ int dns_server_is_accessible(DnsServer *s) {
                         return r;
         }
 
-        r = RET_NERRNO(connect(fd, &sa.sa, SOCKADDR_LEN(sa)));
+        r = RET_NERRNO(connect(fd, &sa.sa, sockaddr_len(&sa)));
         if (!IN_SET(r,
                     0,
                     -ENETUNREACH,

src/resolve/resolved-dns-stream.c

@@ -572,7 +572,7 @@ int dns_stream_new(
 
         if (tfo_address) {
                 s->tfo_address = *tfo_address;
-                s->tfo_salen = SOCKADDR_LEN(*tfo_address);
+                s->tfo_salen = sockaddr_len(tfo_address);
         }
 
         *ret = TAKE_PTR(s);

src/resolve/resolved-dns-stub.c

@@ -1322,7 +1322,7 @@ static int manager_dns_stub_fd_extra(Manager *m, DnsStubListenerExtra *l, int ty
                         log_debug_errno(r, "Failed to enable fragment size reception, ignoring: %m");
         }
 
-        r = RET_NERRNO(bind(fd, &sa.sa, SOCKADDR_LEN(sa)));
+        r = RET_NERRNO(bind(fd, &sa.sa, sockaddr_len(&sa)));
         if (r < 0)
                 goto fail;
 

src/resolve/test-resolved-stream.c

@@ -111,7 +111,7 @@ static void *tcp_dns_server(void *p) {
 
         assert_se((bindfd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0)) >= 0);
         assert_se(setsockopt(bindfd, SOL_SOCKET, SO_REUSEADDR, &(int){1}, sizeof(int)) >= 0);
-        assert_se(bind(bindfd, &server_address.sa, SOCKADDR_LEN(server_address)) >= 0);
+        assert_se(bind(bindfd, &server_address.sa, sockaddr_len(&server_address)) >= 0);
         assert_se(listen(bindfd, 1) >= 0);
         assert_se((acceptfd = accept(bindfd, NULL, NULL)) >= 0);
         server_handle(acceptfd);
@@ -246,7 +246,7 @@ static void test_dns_stream(bool tls) {
         assert_se((clientfd = socket(AF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0)) >= 0);
 
         for (int i = 0; i < 100; i++) {
-                r = connect(clientfd, &server_address.sa, SOCKADDR_LEN(server_address));
+                r = connect(clientfd, &server_address.sa, sockaddr_len(&server_address));
                 if (r >= 0)
                         break;
                 usleep_safe(EVENT_TIMEOUT_USEC / 100);