Null check

Author: mtwomey

src/main/java/com/appirio/tech/core/service/identity/resource/UserResource.java

@@ -498,7 +498,7 @@ public ApiResponse createObject(
         }
 
         // Add business user role if needed
-        if (user.getRegSource().matches("tcBusiness")) {
+        if (user.getRegSource() != null && user.getRegSource().matches("tcBusiness")) {
             assignRoleByName("Business User", user);
         }