replacing return statement that was accidentally removed (#1134)

Author: robertpatrick

core/src/main/python/wlsdeploy/tool/create/wlsroles_helper.py

@@ -97,6 +97,7 @@ def _process_roles_map(self, roles_map):
             result[role] = expression
 
         self.logger.exiting(class_name=self.__class_name, method_name=_method_name)
+        return result
 
     def _update_xacml_role_mapper(self, role_expression_map):
         """