Bug 1061112 - test_app_rep.js fails when "browser.safebrowsing.downloads.enabled" is false or not set. r=gcp

toolkit/components/downloads/test/unit/test_app_rep.js

@@ -64,8 +64,10 @@ function run_test() {
   // Ensure safebrowsing is enabled for this test, even if the app
   // doesn't have it enabled.
   Services.prefs.setBoolPref("browser.safebrowsing.malware.enabled", true);
+  Services.prefs.setBoolPref("browser.safebrowsing.downloads.enabled", true);
   do_register_cleanup(function() {
     Services.prefs.clearUserPref("browser.safebrowsing.malware.enabled");
+    Services.prefs.clearUserPref("browser.safebrowsing.downloads.enabled");
   });
 
   // Set block and allow tables explicitly, since the allowlist is normally