Fixes assets

Author: JohnFulpWillard

tgui/public/tgui.html

@@ -346,17 +346,26 @@
           if (!sync) {
             node.media = 'only x';
           }
+          var removeNodeAndRetry = function () {
+            node.parentNode.removeChild(node);
+            node = null;
+            retry();
+          }
+          // 516: Chromium won't call onload() if there is a 404 error
+          // Legacy IE doesn't use onerror, so we retain that
+          // https://developer.mozilla.org/en-US/docs/Web/HTML/Element/link#stylesheet_load_events
+          node.onerror = function () {
+            node.onerror = null;
+            removeNodeAndRetry();
+          }
           node.onload = function () {
             node.onload = null;
             if (isStyleSheetLoaded(node, url)) {
               // Render the stylesheet
               node.media = 'all';
               return;
             }
-            // Try again
-            node.parentNode.removeChild(node);
-            node = null;
-            retry();
+            removeNodeAndRetry();
           };
           injectNode(node);
           return;