movenc: Remove unneeded chunkSize field from MOVIentry

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavformat/movenc.c

@@ -1811,15 +1811,17 @@ static void build_chunks(MOVTrack *trk)
 {
     int i;
     MOVIentry *chunk= &trk->cluster[0];
+    uint64_t chunkSize = chunk->size;
     chunk->chunkNum= 1;
     trk->chunkCount= 1;
     for(i=1; i<trk->entry; i++){
-        if(chunk->pos + chunk->chunkSize == trk->cluster[i].pos){
-            chunk->chunkSize      += trk->cluster[i].size;
+        if(chunk->pos + chunkSize == trk->cluster[i].pos){
+            chunkSize             += trk->cluster[i].size;
             chunk->samplesInChunk += trk->cluster[i].entries;
         }else{
             trk->cluster[i].chunkNum = chunk->chunkNum+1;
             chunk=&trk->cluster[i];
+            chunkSize = chunk->size;
             trk->chunkCount++;
         }
     }
@@ -2092,7 +2094,6 @@ int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
 
     trk->cluster[trk->entry].pos = avio_tell(pb) - size;
     trk->cluster[trk->entry].samplesInChunk = samplesInChunk;
-    trk->cluster[trk->entry].chunkSize =
     trk->cluster[trk->entry].size = size;
     trk->cluster[trk->entry].entries = samplesInChunk;
     trk->cluster[trk->entry].dts = pkt->dts;

libavformat/movenc.h

@@ -44,7 +44,6 @@ typedef struct MOVIentry {
     uint64_t     pos;
     unsigned int samplesInChunk;
     unsigned int chunkNum;              ///< Chunk number if the current entry is a chunk start otherwise 0
-    uint64_t     chunkSize;
     unsigned int entries;
     int          cts;
     int64_t      dts;