Coding Standards: Escape id attributes in `WP_Customize_Control::re…

…nder_content()` and `::print_template()`.

Follow-up to [30014], [38906].

Props sabbirshouvo.
See #54295.

git-svn-id: https://develop.svn.wordpress.org/trunk@51927 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/class-wp-customize-control.php

@@ -632,8 +632,8 @@ protected function render_content() {
 						?>
 					</button>
 					<div class="new-content-item">
-						<label for="create-input-<?php echo $this->id; ?>"><span class="screen-reader-text"><?php _e( 'New page title' ); ?></span></label>
-						<input type="text" id="create-input-<?php echo $this->id; ?>" class="create-item-input" placeholder="<?php esc_attr_e( 'New page title&hellip;' ); ?>">
+						<label for="create-input-<?php echo esc_attr( $this->id ); ?>"><span class="screen-reader-text"><?php _e( 'New page title' ); ?></span></label>
+						<input type="text" id="create-input-<?php echo esc_attr( $this->id ); ?>" class="create-item-input" placeholder="<?php esc_attr_e( 'New page title&hellip;' ); ?>">
 						<button type="button" class="button add-content"><?php _e( 'Add' ); ?></button>
 					</div>
 				<?php endif; ?>
@@ -675,7 +675,7 @@ protected function render_content() {
 	 */
 	final public function print_template() {
 		?>
-		<script type="text/html" id="tmpl-customize-control-<?php echo $this->type; ?>-content">
+		<script type="text/html" id="tmpl-customize-control-<?php echo esc_attr( $this->type ); ?>-content">
 			<?php $this->content_template(); ?>
 		</script>
 		<?php