Fix typo in #569. (#582)

crates/bevy_ecs/hecs/src/archetype.rs

@@ -304,6 +304,7 @@ impl Archetype {
                         new_data.as_ptr().add(new_off),
                         ty.layout.size() * old_count,
                     );
+                }
                 dealloc(
                     (*self.data.get()).as_ptr().cast(),
                     Layout::from_size_align_unchecked(
@@ -312,7 +313,6 @@ impl Archetype {
                     ),
                 );
             }
-            }
 
             self.data = UnsafeCell::new(new_data);
         }