Bug 1696287 - Fixing Pocket cookie host check. r=gvn

Differential Revision: https://phabricator.services.mozilla.com/D107713

browser/components/pocket/content/pktApi.jsm

@@ -175,7 +175,9 @@ var pktApi = (function() {
       pocketSiteHost,
       oa
     )) {
-      cookies[cookie.name] = cookie.value;
+      if (cookie.host === pocketSiteHost) {
+        cookies[cookie.name] = cookie.value;
+      }
     }
     return cookies;
   }