Run UI operations on correct thread

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -1410,9 +1410,15 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
 
             @Override
             public void run() {
-                loadUrlInCurrentView(HistoryPage.getHistoryPage(BrowserActivity.this));
+                final String historyPage = HistoryPage.getHistoryPage(BrowserActivity.this);
+                BrowserActivity.this.runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        loadUrlInCurrentView(historyPage);
                         mSearch.setText("");
                     }
+                });
+            }
 
         });
     }