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    • Fix extra data mistakingly "extracted" from raw Deflate streams · 46c4fa74 
      Hi, I think there's a bug here.

Per the [BlockFile docstring](/blob/master/src/binwalk/core/common.py#L256), `read_block()` can return **more** than `dlen` bytes of data, by peeking, and this is intended feature.

However, we don't want the peek'd bytes injected into the stream being decompressed -- as the next `read_block()` call will pull them again!

Take a ~1.5 MiB deflated file to test: `binwalk -X` will extract a slighly larger file than a plain `zlib.decompress(-15)` would. (This, exactly, was how this bug bite me.)

Hope this fix is simple enough to be merged easily! Cheers.
      Maxim Ivanov authored
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