HHH-19582 - Fix NPE

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

Author: jrenaat

hibernate-core/src/main/java/org/hibernate/internal/util/collections/AbstractPagedArray.java

@@ -176,7 +176,9 @@ protected Page<E> getOrCreateEntryPage(int index) {
 
 	public void clear() {
 		for ( Page<E> entryPage : elementPages ) {
-			entryPage.clear();
+			if ( entryPage != null ) {
+				entryPage.clear();
+			}
 		}
 		elementPages.clear();
 		elementPages.trimToSize();