Refine query handling

src/resolv.c

@@ -196,14 +196,8 @@ resolv_start(const char *hostname, uint16_t port,
     /*
      * Wrap c-ares's call back in our own
      */
-
     struct resolv_query *query = ss_malloc(sizeof(struct resolv_query));
 
-    if (query == NULL) {
-        LOGE("failed to allocate memory for DNS query callback data.");
-        return NULL;
-    }
-
     memset(query, 0, sizeof(struct resolv_query));
 
     query->port           = port;

src/server.c

@@ -914,14 +914,6 @@ server_recv_cb(EV_P_ ev_io *w, int revents)
             server->stage = STAGE_RESOLVE;
             struct resolv_query *q = resolv_start(host, port,
                                                   resolv_cb, resolv_free_cb, query);
-
-            if (q == NULL) {
-                if (query != NULL)
-                    ss_free(query);
-                server->query = NULL;
-                close_and_free_server(EV_A_ server);
-                return;
-            }
         }
 
         return;