File cemu_cstdarg.patch of Package cemu

diff --git a/src/Common/unix/FileStream_unix.h b/src/Common/unix/FileStream_unix.h
index 12c971d1..8a02f185 100644
--- a/src/Common/unix/FileStream_unix.h
+++ b/src/Common/unix/FileStream_unix.h
@@ -1,5 +1,6 @@
 #pragma once
 #include "Common/precompiled.h"
+#include <cstdarg>
 
 class FileStream
 {