check oom on lws_malloc

Signed-off-by: Andy Green <andy@warmcat.com>

lib/libuv.c

@@ -151,6 +151,10 @@ lws_uv_initloop(struct lws_context *context, uv_loop_t *loop, uv_signal_cb cb,
 
 	if (!loop) {
 		loop = lws_malloc(sizeof(*loop));
+		if (!loop) {
+			lwsl_err("OOM\n");
+			return -1;
+		}
 		uv_loop_init(loop);
 		pt->ev_loop_foreign = 0;
 	} else

lib/service.c

@@ -349,6 +349,8 @@ int lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len)
 	/* a new rxflow, buffer it and warn caller */
 	lwsl_info("new rxflow input buffer len %d\n", len - n);
 	wsi->rxflow_buffer = lws_malloc(len - n);
+	if (!wsi->rxflow_buffer)
+		return -1;
 	wsi->rxflow_len = len - n;
 	wsi->rxflow_pos = 0;
 	memcpy(wsi->rxflow_buffer, buf + n, len - n);