Fix fmt in decoder.rs

Signed-off-by: Jiahao XU <[email protected]>

Author: NobodyXu

src/codec/xz2/decoder.rs

@@ -74,9 +74,7 @@ impl Decode for Xz2Decoder {
         match status {
             Status::Ok => Ok(false),
             Status::StreamEnd => Ok(true),
-            Status::GetCheck => Err(io::Error::other(
-                "Unexpected lzma integrity check",
-            )),
+            Status::GetCheck => Err(io::Error::other("Unexpected lzma integrity check")),
             Status::MemNeeded => Err(io::Error::other("More memory needed")),
         }
     }