Fix build with GCC 13

Gentoo bug https://bugs.gentoo.org/915943

Author: Karlson2k (Evgeny Grin)

diff -ur inputstream.ffmpegdirect-19.0.0-Matrix-orig/src/utils/DiskUtils.h inputstream.ffmpegdirect-19.0.0-Matrix/src/utils/DiskUtils.h
--- inputstream.ffmpegdirect-19.0.0-Matrix-orig/src/utils/DiskUtils.h	2021-09-14 17:23:56.000000000 +0300
+++ inputstream.ffmpegdirect-19.0.0-Matrix/src/utils/DiskUtils.h	2023-10-18 10:40:27.386513580 +0300
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 
 namespace ffmpegdirect
diff -ur inputstream.ffmpegdirect-19.0.0-Matrix-orig/src/utils/HttpProxy.h inputstream.ffmpegdirect-19.0.0-Matrix/src/utils/HttpProxy.h
--- inputstream.ffmpegdirect-19.0.0-Matrix-orig/src/utils/HttpProxy.h	2021-09-14 17:23:56.000000000 +0300
+++ inputstream.ffmpegdirect-19.0.0-Matrix/src/utils/HttpProxy.h	2023-10-18 10:39:14.777829910 +0300
@@ -7,6 +7,7 @@
 
 #pragma once
 
+#include <cstdint>
 #include <string>
 
 namespace ffmpegdirect