avformat/nutenc: Write size into right dynamic buffer

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>

libavformat/nutenc.c

@@ -903,7 +903,7 @@ static int write_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int
                     put_str(dyn_bc, "ChannelLayout");
                     put_s(dyn_bc, -2);
                     put_str(dyn_bc, "u64");
-                    put_v(bc, 8);
+                    put_v(dyn_bc, 8);
                     avio_write(dyn_bc, data, 8); data+=8;
                     sm_data_count++;
                 }

libavformat/version.h

@@ -33,7 +33,7 @@
 // Also please add any ticket numbers that you believe might be affected here
 #define LIBAVFORMAT_VERSION_MAJOR  58
 #define LIBAVFORMAT_VERSION_MINOR  42
-#define LIBAVFORMAT_VERSION_MICRO 102
+#define LIBAVFORMAT_VERSION_MICRO 103
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \