add null-check before delayed calling of the activity callback in ConfigureOrivuderFragment, fixes an NPE

1 files changed, 3 insertions, 1 deletions

diff --git a/app/src/main/java/se/leap/bitmaskclient/providersetup/fragments/ConfigureProviderFragment.java b/app/src/main/java/se/leap/bitmaskclient/providersetup/fragments/ConfigureProviderFragment.java
index ec646cac..e041b19b 100644
--- a/app/src/main/java/se/leap/bitmaskclient/providersetup/fragments/ConfigureProviderFragment.java
+++ b/app/src/main/java/se/leap/bitmaskclient/providersetup/fragments/ConfigureProviderFragment.java
@@ -222,7 +222,9 @@ public class ConfigureProviderFragment extends BaseSetupFragment implements Obse
                 setupActivityCallback.onProviderSelected(provider);
                 handler.postDelayed(() -> {
                     if (!ProviderSetupObservable.isCanceled()) {
-                        setupActivityCallback.onConfigurationSuccess();
+                        if (setupActivityCallback != null) {
+                            setupActivityCallback.onConfigurationSuccess();
+                        }
                     }
                 }, 750);
                 break;