Fix for iOS webview matching.

Author: VashurkinAnton

lib/express-useragent.js

@@ -1072,10 +1072,21 @@
      * boolean flag `isiOSStandalone`, `isiOSUiwebview` and `isAndroidWebview` will be set as side effect.
      */
     UserAgent.prototype.testWebview = function() {
-        if (this.Agent.os === 'iOS' && isBrowser) {
-            if (window.navigator.standalone && !this.Agent.isSafari) {
+        var isiOS = ['iOS', 'OS X'].indexOf(this.Agent.os) !== -1 || (this.Agent.isiPad || this.Agent.isiPod || this.Agent.isiPhone);
+        var isStandaloneBrowser =
+          this.Agent.isYaBrowser ||
+          this.Agent.isOpera ||
+          this.Agent.isIE ||
+          this.Agent.isEdge ||
+          this.Agent.isSafari ||
+          this.Agent.isFirefox ||
+          this.Agent.isChrome ||
+          this.Agent.isUC;
+
+        if (isiOS && isBrowser) {
+            if (window.navigator.standalone && !isStandaloneBrowser) {
                 this.Agent.isiOSStandalone = true;
-            } else if (!window.navigator.standalone && !this.Agent.isSafari) {
+            } else if (!window.navigator.standalone && !isStandaloneBrowser) {
                 this.Agent.isiOSUiwebview = true;
             }
         } else if (this.Agent.isAndroid) {