[gnome-shell] extensionUtils: Check version variable for undefined first

[Florian Müllner <fmuellner src gnome org>]

commit 8754736fda6167402a4ff7f13727b3852c70b746
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Mon Nov 19 12:26:16 2018 +0100

    extensionUtils: Check version variable for undefined first
    
    Avoid a warning message when trying to access requiredArray[2] by
    checking if its undefined first.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/96

 js/misc/extensionUtils.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/js/misc/extensionUtils.js b/js/misc/extensionUtils.js
index a05a884181..2b3c11704f 100644
--- a/js/misc/extensionUtils.js
+++ b/js/misc/extensionUtils.js
@@ -165,8 +165,8 @@ function versionCheck(required, current) {
         let requiredArray = required[i].split('.');
         if (requiredArray[0] == major &&
             requiredArray[1] == minor &&
-            (requiredArray[2] == point ||
-             (requiredArray[2] == undefined && parseInt(minor) % 2 == 0)))
+            ((requiredArray[2] === undefined && parseInt(minor) % 2 == 0) ||
+             requiredArray[2] == point))
             return true;
     }
     return false;