fixup! feat: wrapper for ngx_rbtree_t

Author: bavshin-f5

src/core/rbtree.rs

@@ -336,3 +336,19 @@ where
         };
     }
 }
+
+unsafe impl<K, V, A> Send for RbTree<K, V, A>
+where
+    A: Send + Allocator,
+    K: Send,
+    V: Send,
+{
+}
+
+unsafe impl<K, V, A> Sync for RbTree<K, V, A>
+where
+    A: Sync + Allocator,
+    K: Sync,
+    V: Sync,
+{
+}