bugfix: didn't use right hostname when the length of hostname is greater than 32.

Author: zhuizhuhaomeng

src/ngx_http_lua_balancer.c

@@ -702,7 +702,7 @@ ngx_http_lua_balancer_free_peer(ngx_peer_connection_t *pc, void *data,
                     item->host.len = host->len;
 
                 } else {
-                    item->host.data = ngx_pstrdup(c->pool, bp->addr_text);
+                    item->host.data = ngx_pstrdup(c->pool, host);
                     if (item->host.data == NULL) {
                         ngx_http_lua_balancer_close(c);
 
@@ -713,7 +713,7 @@ ngx_http_lua_balancer_free_peer(ngx_peer_connection_t *pc, void *data,
                         return;
                     }
 
-                    item->host.len = bp->addr_text->len;
+                    item->host.len = host->len;
                 }
 
             } else {