Added fail-safe

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

@@ -456,6 +456,7 @@ public class FragmentDialogSearch extends FragmentDialogBase {
                 .setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
+                        try {
                             BoundaryCallbackMessages.SearchCriteria criteria = new BoundaryCallbackMessages.SearchCriteria();
 
                             criteria.query = etQuery.getText().toString().trim();
@@ -566,6 +567,9 @@ public class FragmentDialogSearch extends FragmentDialogBase {
                                         account, folder,
                                         !device,
                                         criteria);
+                        } catch (Throwable ex) {
+                            Log.e(ex);
+                        }
                     }
                 })
                 .setNegativeButton(android.R.string.no, new DialogInterface.OnClickListener() {