Bug 1308351 - make about:rights web-linkable like about:license and friends, r=mikedeboer

This is a one-line fix. about:rights doesn't take query parameters, isn't interactive, and so making it linkable should be fine for uplift.

MozReview-Commit-ID: CQwh6SPLARf

--HG--
extra : rebase_source : 278b97a21a397c2d6f4cc7fc4da29e12ee27adb9

browser/components/about/AboutRedirector.cpp

@@ -65,6 +65,7 @@ static RedirEntry kRedirMap[] = {
   { "rights",
     "chrome://global/content/aboutRights.xhtml",
     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |
+    nsIAboutModule::MAKE_LINKABLE |
     nsIAboutModule::ALLOW_SCRIPT },
   { "robots", "chrome://browser/content/aboutRobots.xhtml",
     nsIAboutModule::URI_SAFE_FOR_UNTRUSTED_CONTENT |