Fix build with GCC 13

Gentoo bug https://bugs.gentoo.org/899754

diff -ur inputstream.adaptive-19.0.0-Matrix/src/helpers.h inputstream.adaptive-19.0.0-Matrix-fixed/src/helpers.h
--- inputstream.adaptive-19.0.0-Matrix/src/helpers.h	2021-09-14 17:28:17.000000000 +0300
+++ inputstream.adaptive-19.0.0-Matrix-fixed/src/helpers.h	2023-10-18 10:03:57.510248775 +0300
@@ -19,7 +19,7 @@
 #pragma once
 
 #include <string>
-#include <stdint.h>
+#include <cstdint>
 #include <vector>
 #include <map>
 
diff -ur inputstream.adaptive-19.0.0-Matrix/src/Iaes_decrypter.h inputstream.adaptive-19.0.0-Matrix-fixed/src/Iaes_decrypter.h
--- inputstream.adaptive-19.0.0-Matrix/src/Iaes_decrypter.h	2021-09-14 17:28:17.000000000 +0300
+++ inputstream.adaptive-19.0.0-Matrix-fixed/src/Iaes_decrypter.h	2023-10-18 10:03:12.136782831 +0300
@@ -2,6 +2,7 @@
 
 #include "Ap4Types.h"
 
+#include <cstdint>
 #include <string>
 
 class IAESDecrypter