Call BzDecoder::flush on finish

src/codec/bzip2/decoder.rs

@@ -97,8 +97,8 @@
 
     fn finish(
         &mut self,
-        _output: &mut PartialBuffer<impl AsRef<[u8]> + AsMut<[u8]>>,
+        output: &mut PartialBuffer<impl AsRef<[u8]> + AsMut<[u8]>>,
     ) -> io::Result<bool> {
-        Ok(true)
+        Ok(self.decode(&mut PartialBuffer::new(&[][..]), output)?)
     }
 }