Bug 754304 - make in-content preferences linkable via URL, follow-up to use the ignoreFragment API change that bug 1025195 landed. r=me

--HG--
extra : rebase_source : 6405245a2ccfdd09cc3cad86cf846d8c71c5abf7

browser/base/content/utilityOverlay.js

@@ -502,7 +502,7 @@ function openPreferences(paneID, extraArgs)
     let friendlyCategoryName = internalPrefCategoryNameToFriendlyName(paneID);
     let preferencesURL = "about:preferences" +
                          (friendlyCategoryName ? "#" + friendlyCategoryName : "");
-    let newLoad = !win.switchToTabHavingURI(preferencesURL, true, undefined, true);
+    let newLoad = !win.switchToTabHavingURI(preferencesURL, true, {ignoreFragment: true});
     let browser = win.gBrowser.selectedBrowser;
 
     if (newLoad) {