Call BzDecoder::flush on finish

src/codec/bzip2/decoder.rs

@@ -96,9 +96,16 @@
     }
 
     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)
+        match self.decode(
+            &mut PartialBuffer::new(&[][..]),
+            output,
+        )? {
+            Status::Ok => Ok(false),
+            Status::StreamEnd => Ok(true),
+            Status::BufError => Err(io::Error::other("unexpected BufError")),
+        }
     }
 }