Fix SecurityException on Android 6 due to remove contacts on disabled sync

OpenKeychain/src/main/java/org/sufficientlysecure/keychain/ui/base/BaseActivity.java

@@ -67,7 +67,7 @@ public abstract class BaseActivity extends AppCompatActivity {
 
     public static void onResumeChecks(Context context) {
         KeyserverSyncAdapterService.cancelUpdates(context);
-        // in case user has disabled sync from settings
+        // in case user has disabled sync from Android account settings
         ContactSyncAdapterService.deleteIfSyncDisabled(context);
     }