BLC-871 - FieldManager.getField() does not look at the right class so…

…metimes.

(cherry picked from commit ec3f286)

admin/broadleaf-open-admin-platform/src/main/java/org/broadleafcommerce/openadmin/server/service/persistence/module/FieldManager.java

@@ -87,8 +87,8 @@ public Field getField(Class<?> clazz, String fieldName) throws IllegalStateExcep
                     if (matchedClasses.size() > 1) {
                         LOG.warn("Found the property (" + peekAheadToken + ") in more than one class of an inheritance hierarchy. This may lead to unwanted behavior, as the system does not know which class was intended. Do not use the same property name in different levels of the inheritance hierarchy. Defaulting to the first class found (" + matchedClasses.get(0).getName() + ")");
                     }
-                    if (getSingleField(entities[0], peekAheadToken) != null) {
-                        Class<?> matchedClass = entities[0];
+                    if (getSingleField(matchedClasses.get(0), peekAheadToken) != null) {
+                        Class<?> matchedClass = matchedClasses.get(0);
                         PersistentClass persistentClass = dynamicEntityDao.getPersistentClass(matchedClass.getName());
                         if (persistentClass != null && matchedClasses.size() == 1) {
                             Class<?> entityClass;