`nom::be_u32` is used instead of the `nom::le_u32`

[Mingun]

According to the original unrar sources Little-endian should be used there:

https://github.com/Roba1993/RAR/blob/b84da66d1efa361627e4ffbf8f744f889be248f6/src/head_block.rs#L152-L161 https://github.com/Roba1993/RAR/blob/b84da66d1efa361627e4ffbf8f744f889be248f6/src/file_block.rs#L68-L79