diff --git a/src/wp-admin/includes/file.php b/src/wp-admin/includes/file.php
index af88fe023f..a43c5ca64e 100644
a
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b
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function _wp_handle_upload( &$file, $overrides, $time, $action ) { |
890 | 890 | |
891 | 891 | // If you override this, you must provide $ext and $type!! |
892 | 892 | $test_type = isset( $overrides['test_type'] ) ? $overrides['test_type'] : true; |
893 | | $mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : false; |
| 893 | $mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : null; |
894 | 894 | |
895 | 895 | // A correct form post will pass this test. |
896 | 896 | if ( $test_form && ( ! isset( $_POST['action'] ) || $_POST['action'] !== $action ) ) { |