chore: use read_exact in decompress_lz4

Author: dantengsky

src/common/arrow/src/arrow/io/ipc/compression.rs

@@ -13,13 +13,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+use std::io::Read;
+
 use crate::arrow::error::Result;
 
 #[cfg(feature = "io_ipc_compression")]
 #[cfg_attr(docsrs, doc(cfg(feature = "io_ipc_compression")))]
 pub fn decompress_lz4(input_buf: &[u8], output_buf: &mut [u8]) -> Result<()> {
     use std::io::Read;
-    let _ = lz4_flex::frame::FrameDecoder::new(input_buf).read(output_buf)?;
+    lz4_flex::frame::FrameDecoder::new(input_buf).read_exact(output_buf)?;
     Ok(())
 }