IXR: Use a strict comparison to ensure that a non-numerically-indexed array is not incorrectly matched as a numeric array.

See #36586

Built from https://develop.svn.wordpress.org/trunk@37244


git-svn-id: http://core.svn.wordpress.org/trunk@37210 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-IXR.php

@@ -168,7 +168,7 @@ class IXR_Value {
     {
         $expected = 0;
         foreach ($array as $key => $value) {
-            if ((string)$key != (string)$expected) {
+            if ((string)$key !== (string)$expected) {
                 return true;
             }
             $expected++;