Bug 400745 - Re-remove favicon cache. r+a=mconnor

browser/base/content/browser.xul

@@ -274,8 +274,7 @@
                        ondraggesture="PageProxyDragGesture(event);"
                        onload="this.parentNode.selectedIndex = 1;
                                event.stopPropagation();"
-                       onerror="gBrowser.addToMissedIconCache(this.src);
-                                this.removeAttribute('src');
+                       onerror="this.removeAttribute('src');
                                 this.parentNode.selectedIndex = 0;"
                        tooltiptext="&proxyIcon.tooltip;"/>
               </deck>