Bug 1385785 - Clicking on form autofill dropdown warning notes should not open preferences tab. r=lchang

MozReview-Commit-ID: 4IWBroDQNT

--HG--
extra : rebase_source : 3f4bfb45e1aa9c52e6b6eadc4dcf2f3bf8f70d48

browser/extensions/formautofill/content/formautofill.xml

@@ -160,6 +160,10 @@
 
     <handlers>
       <handler event="click" button="0"><![CDATA[
+        if (this._warningTextBox.contains(event.originalTarget)) {
+          return;
+        }
+
         window.openPreferences("panePrivacy", {origin: "autofillFooter"});
       ]]></handler>
     </handlers>