Handle count being zero in transport latch.

1 files changed, 5 insertions, 1 deletions

diff --git a/searchcore/src/vespa/searchcore/proton/persistenceengine/transport_latch.cpp b/searchcore/src/vespa/searchcore/proton/persistenceengine/transport_latch.cpp
index 96025f5eaad..4a5dfb0a2a5 100644
--- a/searchcore/src/vespa/searchcore/proton/persistenceengine/transport_latch.cpp
+++ b/searchcore/src/vespa/searchcore/proton/persistenceengine/transport_latch.cpp
@@ -12,7 +12,11 @@ TransportLatch::TransportLatch(uint32_t cnt)
     : _latch(cnt),
       _lock(),
       _result()
-{}
+{
+    if (cnt == 0u) {
+        _result = std::make_unique<Result>();
+    }
+}
 
 TransportLatch::~TransportLatch() = default;