[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/rust/bytebuffer.rs

@@ -21,7 +21,7 @@ impl ByteBuffer {
     pub fn len(&self) -> usize {
         self.buffer.len()
     }
-    
+
     pub fn is_empty(&self) -> bool {
         self.buffer.is_empty()
     }