Add a missing return description for `has_header_image()`.

See [31224]. See #31888.

Built from https://develop.svn.wordpress.org/trunk@32048


git-svn-id: http://core.svn.wordpress.org/trunk@32027 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/theme.php

@@ -1039,7 +1039,9 @@ function display_header_text() {
  *
  * @since 4.2.0
  *
- * @return bool
+ * @see get_header_image()
+ *
+ * @return bool Whether a header image is set or not.
  */
 function has_header_image() {
 	return (bool) get_header_image();

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-beta4-32047';
+$wp_version = '4.2-beta4-32048';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.