HHH-16169 - Fix potential NullPointerException in CollectionEntry

Signed-off-by: Jan Schatteman <jschatte@redhat.com>

hibernate-core/src/main/java/org/hibernate/engine/spi/CollectionEntry.java

@@ -375,7 +375,7 @@ public final class CollectionEntry implements Serializable {
 	@Override
 	public String toString() {
 		String result = "CollectionEntry" +
-				MessageHelper.collectionInfoString( loadedPersister.getRole(), loadedKey );
+				MessageHelper.collectionInfoString( role, loadedKey );
 		if ( currentPersister != null ) {
 			result += "->" +
 					MessageHelper.collectionInfoString( currentPersister.getRole(), currentKey );