liblzma: Handle allocation failures correctly in lzma_index_init().

Thanks to Jim Meyering.

diff --git a/src/liblzma/common/index.c b/src/liblzma/common/index.c
index ddb9d364362395da59923c9fbed696638e1459eb..9af4bc19d1b540c17f10af264dc365410b3b8c45 100644 (file)
--- a/src/liblzma/common/index.c
+++ b/src/liblzma/common/index.c
@@ -398,10 +398,13 @@ extern LZMA_API(lzma_index *)
 lzma_index_init(lzma_allocator *allocator)
 {
        lzma_index *i = index_init_plain(allocator);
+       if (i == NULL)
+               return NULL;
+
        index_stream *s = index_stream_init(0, 0, 1, 0, allocator);
-       if (i == NULL || s == NULL) {
-               index_stream_end(s, allocator);
+       if (s == NULL) {
                lzma_free(i, allocator);
+               return NULL;
        }
 
        index_tree_append(&i->streams, &s->node);