Code Duplication    Length = 7-7 lines in 2 locations

src/wp-admin/custom-header.php 2 locations

@@ 724-730 (lines=7) @@
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	 */
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	public function step_2() {
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		check_admin_referer('custom-header-upload', '_wpnonce-custom-header-upload');
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		if ( ! current_theme_supports( 'custom-header', 'uploads' ) ) {
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			wp_die(
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				'<h1>' . __( 'Cheatin&#8217; uh?' ) . '</h1>' .
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				'<p>' . __( 'The current theme does not support uploading a custom header image.' ) . '</p>',
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				403
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			);
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		}
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		if ( empty( $_POST ) && isset( $_GET['file'] ) ) {
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			$attachment_id = absint( $_GET['file'] );
@@ 882-888 (lines=7) @@
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	public function step_3() {
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		check_admin_referer( 'custom-header-crop-image' );
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		if ( ! current_theme_supports( 'custom-header', 'uploads' ) ) {
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			wp_die(
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				'<h1>' . __( 'Cheatin&#8217; uh?' ) . '</h1>' .
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				'<p>' . __( 'The current theme does not support uploading a custom header image.' ) . '</p>',
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				403
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			);
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		}
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		if ( ! empty( $_POST['skip-cropping'] ) && ! ( current_theme_supports( 'custom-header', 'flex-height' ) || current_theme_supports( 'custom-header', 'flex-width' ) ) ) {
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			wp_die(