backing out last patch until it is decided how error page favicons will be

implemented

suite/browser/tabbrowser.xml

@@ -705,13 +705,8 @@
               Components.interfaces.nsIScriptSecurityManager;
 
             try {
-              // error pages can load their favicon
-              // to be on the safe side, only allow chrome:// favicons
-              const aboutNeterr = "about:neterror?";
-              if (origURI.spec.substr(0, aboutNeterr.length) != aboutNeterr ||
-                  !uri.schemeIs("chrome"))
-                secMan.checkLoadURI(origURI, uri,
-                                    nsIScriptSecMan.DISALLOW_SCRIPT);
+              secMan.checkLoadURI(origURI, uri,
+                                  nsIScriptSecMan.DISALLOW_SCRIPT);
             } catch(e) {
               return;
             }