Prevent crash

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

@@ -778,12 +778,16 @@ public class FragmentMessages extends FragmentBase implements SharedPreferences.
 
                     @Override
                     protected void onExecuted(Bundle args, EntityFolder drafts) {
-                        LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(getContext());
-                        lbm.sendBroadcast(
-                                new Intent(ActivityView.ACTION_VIEW_MESSAGES)
-                                        .putExtra("account", drafts.account)
-                                        .putExtra("folder", drafts.id)
-                                        .putExtra("type", drafts.type));
+                        if (drafts == null)
+                            Snackbar.make(view, R.string.title_no_primary_drafts, Snackbar.LENGTH_LONG).show();
+                        else {
+                            LocalBroadcastManager lbm = LocalBroadcastManager.getInstance(getContext());
+                            lbm.sendBroadcast(
+                                    new Intent(ActivityView.ACTION_VIEW_MESSAGES)
+                                            .putExtra("account", drafts.account)
+                                            .putExtra("folder", drafts.id)
+                                            .putExtra("type", drafts.type));
+                        }
                     }
 
                     @Override