Bug #30972348: ADDING PROXY USER WITH LOCALHOST CRASHES MYSQL

Reverting the patch due to test case failure

RB#25070

Author: G Manasa

sql/auth/sql_auth_cache.cc

@@ -271,7 +271,7 @@ ACL_PROXY_USER::check_validity(bool check_no_resolve)
   if (check_no_resolve &&
       (hostname_requires_resolving(host.get_host()) ||
        hostname_requires_resolving(proxied_host.get_host())) &&
-      strcmp(host.get_host() ? host.get_host() : "", "localhost") != 0) {
+      strcmp(host.get_host(), "localhost") != 0) {
     sql_print_warning("'proxies_priv' entry '%s@%s %s@%s' "
                       "ignored in --skip-name-resolve mode.",
                       proxied_user ? proxied_user : "",