Update src/stream/stream/max_by.rs

Co-Authored-By: Taiki Endo <[email protected]>

Author: yjhmelody

src/stream/stream/max_by.rs

@@ -51,7 +51,7 @@ where
                 }
                 Poll::Pending
             }
-            None => Poll::Ready(*this.max),
+            None => Poll::Ready(this.max.take()),
         }
     }
 }