simplify
Originally committed as revision 11533 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -57,9 +57,8 @@ void *av_tree_insert(AVTreeNode **tp, void *key, int (*cmp)(void *key, const voi
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return t->elem;
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else if(t->child[0]||t->child[1]){
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int i= !t->child[0];
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AVTreeNode **child= &t->child[i];
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void *next_elem[2];
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av_tree_find(*child, key, cmp, next_elem);
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av_tree_find(t->child[i], key, cmp, next_elem);
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key= t->elem= next_elem[i];
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v= -i;
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}else{
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