Only call classFromId once

1 files changed, 4 insertions, 6 deletions

diff --git a/document/src/vespa/document/update/valueupdate.cpp b/document/src/vespa/document/update/valueupdate.cpp
index 103d9341f0e..b43f9f7f095 100644
--- a/document/src/vespa/document/update/valueupdate.cpp
+++ b/document/src/vespa/document/update/valueupdate.cpp
@@ -13,20 +13,18 @@ IMPLEMENT_IDENTIFIABLE_ABSTRACT(ValueUpdate, Identifiable);
 std::unique_ptr<ValueUpdate>
 ValueUpdate::createInstance(const DocumentTypeRepo& repo, const DataType& type, ByteBuffer& buffer, int serializationVersion)
 {
-    ValueUpdate* update(NULL);
     int32_t classId = 0;
     buffer.getIntNetwork(classId);
 
     const Identifiable::RuntimeClass * rtc(Identifiable::classFromId(classId));
-    if (rtc != NULL) {
-        update = static_cast<ValueUpdate*>(Identifiable::classFromId(classId)->create());
-        /// \todo TODO (was warning):  Updates are not versioned in serialization format. Will not work with altering it.
+    if (rtc != nullptr) {
+        std::unique_ptr<ValueUpdate> update(static_cast<ValueUpdate*>(rtc->create()));
+        /// \todo TODO (was warning):  Updates are not versioned in serialization format. Will not work without altering it.
         update->deserialize(repo, type, buffer, serializationVersion);
+        return update;
     } else {
         throw std::runtime_error(vespalib::make_string("Could not find a class for classId %d(%x)", classId, classId));
     }
-
-    return std::unique_ptr<ValueUpdate>(update);
 }
 
 }