Corrected datatype of salen to fix compiler warning

src/sock.c

@@ -236,7 +236,7 @@ int
 getpeer_information(int fd, char *ipaddr, char *string_addr)
 {
         struct sockaddr_storage sa;
-        size_t salen = sizeof(sa);
+        socklen_t salen = sizeof sa;
 
         assert(fd >= 0);
         assert(ipaddr != NULL);