fix

Author: nikvas0

ydb/core/kqp/runtime/kqp_write_table.cpp

@@ -1084,6 +1084,7 @@ class TShardedWriteController : public IShardedWriteController {
     }
 
     void Close() override {
+        auto allocGuard = TypeEnv.BindAllocator();
         YQL_ENSURE(Serializer);
         Closed = true;
         Serializer->Close();
@@ -1189,6 +1190,12 @@ class TShardedWriteController : public IShardedWriteController {
         , TypeEnv(typeEnv) {
     }
 
+    ~TShardedWriteController() {
+        auto allocGuard = TypeEnv.BindAllocator();
+        ShardsInfo.Clear();
+        Serializer = nullptr;
+    }
+
 private:
     void FlushSerializer(bool force) {
         if (force) {