Plugged a memory leak in stream_decoder.c.

diff --git a/src/liblzma/common/stream_decoder.c b/src/liblzma/common/stream_decoder.c
index 7522888..56de3d9 100644 (file)
--- a/src/liblzma/common/stream_decoder.c
+++ b/src/liblzma/common/stream_decoder.c
@@ -204,6 +204,14 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
                coder->block_options.check = coder->header_flags.check;
                coder->block_options.has_crc32 = coder->header_flags.has_crc32;
 
+               for (size_t i = 0;
+                               i < ARRAY_SIZE(coder->block_options.filters);
+                               ++i) {
+                       lzma_free(coder->block_options.filters[i].options,
+                                       allocator);
+                       coder->block_options.filters[i].options = NULL;
+               }
+
                return_if_error(lzma_block_header_decoder_init(
                                &coder->block_header_decoder, allocator,
                                &coder->block_options));
@@ -359,6 +367,9 @@ stream_decode(lzma_coder *coder, lzma_allocator *allocator,
 static void
 stream_decoder_end(lzma_coder *coder, lzma_allocator *allocator)
 {
+       for (size_t i = 0; i < ARRAY_SIZE(coder->block_options.filters); ++i)
+               lzma_free(coder->block_options.filters[i].options, allocator);
+
        lzma_next_coder_end(&coder->block_decoder, allocator);
        lzma_next_coder_end(&coder->block_header_decoder, allocator);
        lzma_next_coder_end(&coder->flags_decoder, allocator);
@@ -389,6 +400,11 @@ stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
                next->coder->metadata.index = NULL;
                next->coder->metadata.extra = NULL;
        } else {
+               for (size_t i = 0; i < ARRAY_SIZE(
+                               next->coder->block_options.filters); ++i)
+                       lzma_free(next->coder->block_options
+                                       .filters[i].options, allocator);
+
                lzma_index_free(next->coder->metadata.index, allocator);
                next->coder->metadata.index = NULL;
 
@@ -396,6 +412,10 @@ stream_decoder_init(lzma_next_coder *next, lzma_allocator *allocator,
                next->coder->metadata.extra = NULL;
        }
 
+       for (size_t i = 0; i < ARRAY_SIZE(next->coder->block_options.filters);
+                       ++i)
+               next->coder->block_options.filters[i].options = NULL;
+
        next->coder->info = lzma_info_init(next->coder->info, allocator);
        if (next->coder->info == NULL)
                return LZMA_MEM_ERROR;