HHH-16977 Fixed in NullPointerException in EntityEntryContext.downgradeLocks

Author: klockla

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

@@ -370,7 +370,10 @@ public void downgradeLocks() {
 
 		ManagedEntity node = head;
 		while ( node != null ) {
-			node.$$_hibernate_getEntityEntry().setLockMode( LockMode.NONE );
+			EntityEntry entityEntry = node.$$_hibernate_getEntityEntry();
+			if ( entityEntry != null ) {
+				entityEntry.setLockMode( LockMode.NONE );
+			}
 
 			node = node.$$_hibernate_getNextManagedEntity();
 		}