Fixed crash in history

app/src/main/java/acr/browser/lightning/dialog/LightningDialogBuilder.java

@@ -14,6 +14,7 @@ import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.EditText;
 
+import com.anthonycr.bonsai.Schedulers;
 import com.squareup.otto.Bus;
 
 import java.util.List;
@@ -193,10 +194,15 @@ public class LightningDialogBuilder {
                         public void run() {
                             mHistoryDatabase.deleteHistoryItem(url);
                             // openHistory();
+                            Schedulers.main().execute(new Runnable() {
+                                @Override
+                                public void run() {
                                     mEventBus.post(new BrowserEvents.OpenHistoryInCurrentTab());
                                 }
                             });
                         }
+                    });
+                }
             },
             new BrowserDialog.Item(R.string.action_open) {
                 @Override