Removing unnecessary checks.

git-svn-id: svn://10.0.0.236/trunk@133444 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/browser/base/content/browser.js

@@ -195,24 +195,20 @@ function UpdateBackForwardButtons()
   // get inherited into anonymous content, broadcast to other widgets, etc.!
   // Don't do it if the value hasn't changed! - dwh
 
-  if (backBroadcaster) {
-    var backDisabled = backBroadcaster.hasAttribute("disabled");
-    var forwardDisabled = forwardBroadcaster.hasAttribute("disabled");
-    if (backDisabled == webNavigation.canGoBack) {
-      if (backDisabled)
-        backBroadcaster.removeAttribute("disabled");
-      else
-        backBroadcaster.setAttribute("disabled", true);
-    }
+  var backDisabled = backBroadcaster.hasAttribute("disabled");
+  var forwardDisabled = forwardBroadcaster.hasAttribute("disabled");
+  if (backDisabled == webNavigation.canGoBack) {
+    if (backDisabled)
+      backBroadcaster.removeAttribute("disabled");
+    else
+      backBroadcaster.setAttribute("disabled", true);
   }
   
-  if (forwardBroadcaster) {
-    if (forwardDisabled == webNavigation.canGoForward) {
-      if (forwardDisabled)
-        forwardBroadcaster.removeAttribute("disabled");
-      else
-        forwardBroadcaster.setAttribute("disabled", true);
-    }
+  if (forwardDisabled == webNavigation.canGoForward) {
+    if (forwardDisabled)
+      forwardBroadcaster.removeAttribute("disabled");
+    else
+      forwardBroadcaster.setAttribute("disabled", true);
   }
 }
 
@@ -319,6 +315,7 @@ function Startup()
       }
     }
   }
+  return;
   setTimeout(delayedStartup, 0);
 }