Re-fixing bug 37339 - Checking an undefined variable for a specific value didn't work in Netscape 4 (and was probably a strict warning everywhere else).

Fix by Christian Reis <kiko@async.com.br>
r= afranke, jake


git-svn-id: svn://10.0.0.236/trunk@111060 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/webtools/bugzilla/quicksearch.js

@@ -46,7 +46,7 @@ function do_shift(l) {
 }
 
 function go_to (url) {
-    if (sidebar == 1) {
+    if ( typeof sidebar != "undefined" && sidebar == 1 ) {
         load_relative_url(url);
     } else {
         document.location.href = url;