keycloak-memoizeit

diff --git a/services/src/main/java/org/keycloak/services/resources/SocialResource.java b/services/src/main/java/org/keycloak/services/resources/SocialResource.java
index 4e7f812..73e139c 100644
--- a/services/src/main/java/org/keycloak/services/resources/SocialResource.java
+++ b/services/src/main/java/org/keycloak/services/resources/SocialResource.java
@@ -144,6 +144,10 @@ public class SocialResource {
                 UserModel user = realm.getUser(provider.getId() + "." + socialUser.getId());
 
                 if (user == null) {
+                    if (!realm.isRegistrationAllowed()) {
+                        return oauth.forwardToSecurityFailure("Registration not allowed");
+                    }
+
                     user = realm.addUser(provider.getId() + "." + socialUser.getId());
                     user.setAttribute(provider.getId() + ".id", socialUser.getId());