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liblzma: Add dest and src NULL checks to lzma_index_cat.
The documentation states LZMA_PROG_ERROR can be returned from lzma_index_cat. Previously, lzma_index_cat could not return LZMA_PROG_ERROR. Now, the validation is similar to lzma_index_append, which does a NULL check on the index parameter.
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@ -771,6 +771,9 @@ extern LZMA_API(lzma_ret)
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lzma_index_cat(lzma_index *restrict dest, lzma_index *restrict src,
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const lzma_allocator *allocator)
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{
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if (dest == NULL || src == NULL)
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return LZMA_PROG_ERROR;
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const lzma_vli dest_file_size = lzma_index_file_size(dest);
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// Check that we don't exceed the file size limits.
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