fix(datatypes): keep frame flush guard clippy clean

Signed-off-by: discord9 <55937128+discord9@users.noreply.github.com>

src/datatypes/src/series/frame.rs

@@ -303,10 +303,10 @@ impl RawSeriesChunkCursor {
                 return Ok(Some(batch));
             }
             builder.push(row)?;
-            if builder.is_full() {
-                if let Some(batch) = builder.flush()? {
-                    return Ok(Some(batch));
-                }
+            if builder.is_full()
+                && let Some(batch) = builder.flush()?
+            {
+                return Ok(Some(batch));
             }
         }
     }