Fix type mismatches.

--- lrzsz-0.12.20/src/tcp.c	1998-12-28 10:41:38.000000000 +0000
+++ lrzsz-0.12.20/src/tcp.c	2025-07-04 04:37:53.533675686 +0100
@@ -56,7 +56,7 @@
 	struct sockaddr_in s;
 	struct sockaddr_in t;
 	int on=1;
-	size_t len;
+	socklen_t len;
 
 	if ((sock = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP)) < 0) {
 		error(1,errno,"socket");
@@ -91,7 +91,7 @@
 {
 	int so;
 	struct  sockaddr_in s;
-	size_t namelen;
+	socklen_t namelen;
 	int num=0;
 
 	namelen = sizeof(s);