more return code checking

Signed-off-by: Andy Green <andy.green@linaro.org>

lib/libwebsockets.c

@@ -388,7 +388,8 @@ libwebsockets_get_addresses(struct libwebsocket_context *context,
 	if (addr4.sin_family == AF_UNSPEC)
 		return -1;
 
-	lws_plat_inet_ntop(AF_INET, &addr4.sin_addr, rip, rip_len);
+	if (lws_plat_inet_ntop(AF_INET, &addr4.sin_addr, rip, rip_len) == NULL)
+		return -1;
 
 	return 0;
 }

lib/parsers.c

@@ -281,7 +281,8 @@ int libwebsocket_parse(
 		case URIES_SEEN_PERCENT_H1:
 			if (char_to_hex(c) < 0) {
 				/* regurgitate */
-				issue_char(wsi, '%');
+				if (issue_char(wsi, '%') < 0)
+					return -1;
 				wsi->u.hdr.ues = URIES_IDLE;
 				/* regurgitate + assess */
 				if (libwebsocket_parse(context, wsi, wsi->u.hdr.esc_stash) < 0)