liblzma: Fix lzma_index_dup() for empty Streams.
Stream Flags and Stream Padding weren't copied from
empty Streams.
diff --git a/src/liblzma/common/index.c b/src/liblzma/common/index.c
index bc1ef29..26e4e51 100644
--- a/src/liblzma/common/index.c
+++ b/src/liblzma/common/index.c
@@ -872,11 +872,8 @@
index_stream *dest = index_stream_init(src->node.compressed_base,
src->node.uncompressed_base, src->number,
src->block_number_base, allocator);
-
- // Return immediately if allocation failed or if there are
- // no groups to duplicate.
- if (dest == NULL || src->groups.leftmost == NULL)
- return dest;
+ if (dest == NULL)
+ return NULL;
// Copy the overall information.
dest->record_count = src->record_count;
@@ -884,6 +881,10 @@
dest->stream_flags = src->stream_flags;
dest->stream_padding = src->stream_padding;
+ // Return if there are no groups to duplicate.
+ if (src->groups.leftmost == NULL)
+ return dest;
+
// Allocate memory for the Records. We put all the Records into
// a single group. It's simplest and also tends to make
// lzma_index_locate() a little bit faster with very big Indexes.
