Fix Debug build failure with ffmpeg enabled on MSVC 8

source/blender/blenkernel/intern/writeffmpeg.c

@@ -21,8 +21,11 @@
 #include <stdio.h>
 
 #if defined(_WIN32) && defined(_DEBUG) && !defined(__MINGW32__) && !defined(__CYGWIN__)
+/* This does not seem necessary or present on MSVC 8, but may be needed in earlier versions? */
+#if _MSC_VER < 1400
 #include <stdint.h>
 #endif
+#endif
 
 #include <stdlib.h>