fix pts type in avcodec.h for WIN32 patch by (Richard Hodges <rh at matriplex dot com>)

Originally committed as revision 1738 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/avcodec.h

@@ -223,7 +223,7 @@ static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
      * - encoding: MUST be set by user\
      * - decoding: set by lavc\
      */\
-    long long int pts;\
+    int64_t pts;\
 \
     /**\
      * picture number in bitstream order.\