Taxonomy: Restore deprecated argument to `term_description()` signature.

This ensures that the parameter can't be reused for something else
in the future.

Props jorbin.
Fixes #42605.
Built from https://develop.svn.wordpress.org/trunk@42417


git-svn-id: http://core.svn.wordpress.org/trunk@42248 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/category-template.php

@@ -1202,10 +1202,11 @@ function tag_description( $tag = 0 ) {
  * @since 2.8.0
  * @since 4.9.2 The `$taxonomy` parameter was deprecated.
  *
- * @param int $term Optional. Term ID. Will use global term ID by default.
+ * @param int  $term       Optional. Term ID. Will use global term ID by default.
+ * @param null $deprecated Deprecated argument.
  * @return string Term description, available.
  */
-function term_description( $term = 0 ) {
+function term_description( $term = 0, $deprecated = null ) {
 	if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
 		$term = get_queried_object();
 		if ( $term ) {

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.0-alpha-42416';
+$wp_version = '5.0-alpha-42417';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.