fix compilation error with the ubuntu 9.04 ffmpeg.

git-svn-id: svn+ssh://svn.savannah.nongnu.org/linphone/trunk@457 3f6dc0c8-ddfe-455d-9043-3cd528dc4637

linphone/mediastreamer2/src/ffmpeg-priv.h

@@ -46,7 +46,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #endif
 
 
-#if LIBAVCODEC_VERSION_MAJOR <= 51
+#if (LIBAVCODEC_VERSION_MAJOR <= 51) && (LIBAVCODEC_VERSION_MINOR <= 26)
 /*should work as long as nobody uses avformat.h*/
 typedef struct AVPacket{
 	uint8_t *data;