Prevent crash

app/src/main/java/eu/faircode/email/AdapterAnswer.java

@@ -219,7 +219,8 @@ public class AdapterAnswer extends RecyclerView.Adapter<AdapterAnswer.ViewHolder
             @Override
             protected Boolean onExecute(Context context, Bundle args) {
                 DB db = DB.getInstance(context);
-                return (db.identity().getComposableIdentities(null).size() > 0);
+                List<TupleIdentityEx> identities = db.identity().getComposableIdentities(null);
+                return (identities != null && identities.size() > 0);
             }
 
             @Override

app/src/main/java/eu/faircode/email/Core.java

@@ -4386,8 +4386,9 @@ class Core {
                 }
             }
 
-            if (notify_reply && message.content &&
-                    db.identity().getComposableIdentities(message.account).size() > 0) {
+            if (notify_reply && message.content) {
+                List<TupleIdentityEx> identities = db.identity().getComposableIdentities(message.account);
+                if (identities != null && identities.size() > 0) {
                     Intent reply = new Intent(context, ActivityCompose.class)
                             .putExtra("action", "reply")
                             .putExtra("reference", message.id)
@@ -4403,6 +4404,7 @@ class Core {
                             .setAllowGeneratedReplies(false);
                     mbuilder.addAction(actionReply.build());
                 }
+            }
 
             if (notify_reply_direct &&
                     message.content &&

app/src/main/java/eu/faircode/email/FragmentDialogIdentity.java

@@ -45,6 +45,7 @@ import androidx.preference.PreferenceManager;
 
 import com.google.android.material.floatingactionbutton.FloatingActionButton;
 
+import java.util.ArrayList;
 import java.util.List;
 
 public class FragmentDialogIdentity extends FragmentDialogBase {
@@ -133,6 +134,9 @@ public class FragmentDialogIdentity extends FragmentDialogBase {
 
             @Override
             protected void onExecuted(Bundle args, List<TupleIdentityEx> identities) {
+                if (identities == null)
+                    identities = new ArrayList<>();
+
                 AdapterIdentitySelect iadapter = new AdapterIdentitySelect(getContext(), identities);
                 spIdentity.setAdapter(iadapter);