YQ-727 Add forgotten sync.

ref:b3694b7c0a78078f5a95a5940c60c28a6c3608d2

1 files changed, 1 insertions, 0 deletions

diff --git a/ydb/library/yql/providers/common/http_gateway/yql_http_gateway.cpp b/ydb/library/yql/providers/common/http_gateway/yql_http_gateway.cpp
index 44f076536a2..a1b627e62f2 100644
--- a/ydb/library/yql/providers/common/http_gateway/yql_http_gateway.cpp
+++ b/ydb/library/yql/providers/common/http_gateway/yql_http_gateway.cpp
@@ -388,6 +388,7 @@ private:
         TOnDowloadFinsh onFinish) final
     {
         auto easy = TEasyCurlStream::Make(std::move(url), std::move(headers), expectedSize, std::move(onNewData), std::move(onFinish));
+        const std::unique_lock lock(Sync);
         Await.emplace(std::move(easy));
         Wakeup(expectedSize);
     }