REmove stray '}' that causes a JS error. Bug 227623, r=neil, sr=alecf, a=dbaron

suite/common/pref/pref-scripts.js

@@ -61,11 +61,10 @@ function javascriptEnabledChange(){
 
 function Startup(){
   //If we don't have a checkbox under groupbox pluginPreferences, we should hide it
-    var pluginGroup = document.getElementById("pluginPreferences")
+  var pluginGroup = document.getElementById("pluginPreferences");
   var children = pluginGroup.childNodes;
   if (!children || children.length <= 1)    // 1 for the caption
     pluginGroup.setAttribute("hidden", "true");
-  }
 
   javascriptEnabledChange();
 }