Bug 1343498: Don't fail on unparseable host permissions r=kmag

MozReview-Commit-ID: BHIzjjz23N7

--HG--
extra : rebase_source : d8b684281c04fc70e29737fbd67bc92725860114

browser/modules/ExtensionsUI.jsm

@@ -247,7 +247,8 @@ this.ExtensionsUI = {
       }
       let match = /^[htps*]+:\/\/([^/]+)\//.exec(permission);
       if (!match) {
-        throw new Error("Unparseable host permission");
+        Cu.reportError(`Unparseable host permission ${permission}`);
+        continue;
       }
       if (match[1] == "*") {
         allUrls = true;