Fix Scruntinizer issues

src/drivers/phantomjs/driver.js

@@ -22,7 +22,7 @@
 
 		require('fs').changeWorkingDirectory(scriptDir);
 
-		require('system').args.forEach(function(arg, i) {
+		require('system').args.forEach(function(arg) {
 			var
 				value,
 				arr = /^(--[^=]+)=(.+)$/.exec(arg);

src/drivers/webextension/js/driver.js

@@ -148,7 +148,9 @@
 						}
 
 						for ( var header in responseHeaders ) {
-							headersCache[uri][header] = responseHeaders[header];
+							if ( responseHeaders.hasOwnProperty(header) ) {
+								headersCache[uri][header] = responseHeaders[header];
+							}
 						}
 					}
 
@@ -209,6 +211,7 @@
 						};
 
 						break;
+					default:
 				}
 
 				sendResponse(response);
@@ -313,7 +316,7 @@
 
 			xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
 
-			xhr.onreadystatechange = function(e) {
+			xhr.onreadystatechange = function() {
 				if ( xhr.readyState == 4 ) {
 					w.log('w.driver.post: status ' + xhr.status + ' (' + url + ')');
 				}

src/drivers/webextension/js/i18n.js

@@ -2,12 +2,12 @@
 
 document.addEventListener('DOMContentLoaded', function() {
 	var
-		i, value, attr,
+		i, value,
-		nodes = document.getElementsByTagName('*');
+		nodes = document.querySelector('*');
 
 	for ( i = 0; i < nodes.length; i ++ ) {
-		if ( attr = nodes[i].dataset.i18n ) {
+		if ( value = nodes[i].dataset.i18n ) {
-			nodes[i].innerHTML = browser.i18n.getMessage(attr);
+			nodes[i].innerHTML = browser.i18n.getMessage(value);
 		}
 	}
 });

src/drivers/webextension/js/popup.js

@@ -1,3 +1,6 @@
+/** global: chrome */
+/** global: browser */
+
 document.addEventListener('DOMContentLoaded', function() {
 	var
 		slugify, popup,
@@ -34,6 +37,8 @@ document.addEventListener('DOMContentLoaded', function() {
 
 			var callback = function(tabs) {
         function sendGetApps(response) {
+					var html;
+
 					if ( response.tabCache && response.tabCache.count > 0 ) {
 						detectedApps.innerHTML = '';
 

src/wappalyzer.js

@@ -508,9 +508,6 @@ var wappalyzer = (function() {
 				driver('ping');
 			}
 
-			apps = null;
-			data = null;
-
 			driver('displayApps');
 		}
 	};