Twenty Nineteen: Correct function name in a `function_exists()` check for `twentynineteen_get_user_avatar_markup()`.

Props mukesh27, diego-la-monica.
Fixes #46410.
Built from https://develop.svn.wordpress.org/trunk@45383


git-svn-id: http://core.svn.wordpress.org/trunk@45194 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-content/themes/twentynineteen/inc/template-tags.php

@@ -166,7 +166,7 @@ if ( ! function_exists( 'twentynineteen_post_thumbnail' ) ) :
 	}
 endif;
 
-if ( ! function_exists( 'twentynineteen_comment_avatar' ) ) :
+if ( ! function_exists( 'twentynineteen_get_user_avatar_markup' ) ) :
 	/**
 	 * Returns the HTML markup to generate a user avatar.
 	 */

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45382';
+$wp_version = '5.3-alpha-45383';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.