Bug#38021787 Compile warning in gcs_xcom_networking.cc -Werror=attribute-warning

gcc 14 on EL9, RelWithDebInfo mode said:
error: call to '*__inet_ntop_chk' declared with attribute warning:
inet_ntop called with bigger length than size of destination buffer [-Werror=attribute-warning]

inet_ntop was called with incorrect 'size' argument.

Change-Id: I28410550394e2cd0d18ec30832a93af57496f422

Author: Tor Didriksen

plugin/group_replication/libmysqlgcs/src/bindings/xcom/gcs_xcom_networking.cc

@@ -422,25 +422,26 @@ static bool sock_descriptor_to_sockaddr(int fd, struct sockaddr_storage *sa) {
   */
 static bool sock_descriptor_to_string(int fd, std::string &out) {
   struct sockaddr_storage sa;
-  auto addr_size = static_cast<socklen_t>(sizeof(struct sockaddr_storage));
   char saddr[INET6_ADDRSTRLEN];
 
   // get the sockaddr struct
   sock_descriptor_to_sockaddr(fd, &sa);
 
   // try IPv4
   if (sa.ss_family == AF_INET) {
-    if (inet_ntop(AF_INET, &(((struct sockaddr_in *)&sa)->sin_addr), saddr,
-                  addr_size)) {
+    auto inaddr = &(((struct sockaddr_in *)&sa)->sin_addr);
+    if (inet_ntop(AF_INET, inaddr, saddr,
+                  static_cast<socklen_t>(sizeof(saddr)))) {
       out = saddr;
       return false;
     }
   }
 
   // try IPv6
   if (sa.ss_family == AF_INET6) {
-    if (inet_ntop(AF_INET6, &(((struct sockaddr_in6 *)&sa)->sin6_addr), saddr,
-                  addr_size)) {
+    auto inaddr = &(((struct sockaddr_in6 *)&sa)->sin6_addr);
+    if (inet_ntop(AF_INET6, inaddr, saddr,
+                  static_cast<socklen_t>(sizeof(saddr)))) {
       out = saddr;
       return false;
     }