HHH-8863 correct StatisticalLoggingSessionEventListener partial flush

timing

Author: brmeyer

hibernate-core/src/main/java/org/hibernate/engine/internal/StatisticalLoggingSessionEventListener.java

@@ -266,7 +266,7 @@ public void partialFlushEnd(int numberOfEntities, int numberOfCollections) {
 		partialFlushCount++;
 		partialFlushEntityCount += numberOfEntities;
 		partialFlushCollectionCount += numberOfCollections;
-		partialFlushTime += ( System.nanoTime() - flushStart );
+		partialFlushTime += ( System.nanoTime() - partialFlushStart );
 		partialFlushStart = -1;
 	}