Sync with develop branch. (#6377)

Without this change argv[1] is ignored.

upgrade.php

@@ -13,7 +13,9 @@ if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
 }
 
 
-((array_key_exists('1',$argv[1]))) ? $branch = $argv[1] : $branch = 'master';
+// Check if a branch or tag was passed in the command line,
+// otherwise just use master
+(array_key_exists('1', $argv)) ? $branch = $argv[1] : $branch = 'master';
 
 echo "Welcome to the Snipe-IT upgrader.\n\n";
 echo "Please note that this script will not download the latest Snipe-IT \n";