[symfony#53153] fix merge

Author: xabbuh

src/Symfony/Bundle/WebProfilerBundle/Resources/views/Profiler/toolbar_js.html.twig

@@ -550,7 +550,9 @@
                             /* Evaluate in global scope scripts embedded inside the toolbar */
                             var i, scripts = [].slice.call(el.querySelectorAll('script'));
                             for (i = 0; i < scripts.length; ++i) {
-                                eval.call({}, scripts[i].firstChild.nodeValue);
+                                if (scripts[i].firstChild) {
+                                    eval.call({}, scripts[i].firstChild.nodeValue);
+                                }
                             }
 
                             el.style.display = -1 !== xhr.responseText.indexOf('sf-toolbarreset') ? 'block' : 'none';