avformat/dvdvideodec: add explicit inttypes.h include

Since log statements printing int64 were made portable in
4464b7eeb1, let us include
inttypes.h explicitly (as it is unclear where PRId64 and
such are coming from now).

Reported-by: Leo Izen <leo.izen@gmail.com>
Signed-off-by: Marth64 <marth64@proxyid.net>

libavformat/dvdvideodec.c

@@ -30,6 +30,8 @@
  * 7) Close the dvdnav VM, and free dvdread's IFO structures
  */
 
+#include <inttypes.h>
+
 #include <dvdnav/dvdnav.h>
 #include <dvdread/dvd_reader.h>
 #include <dvdread/ifo_read.h>