In `get_next_comments_link()`, ensure proper pagination when no 'cpage' query var is found.

The 'cpage' query var is only set when using `comments_template()` to display
comments. If displaying them in a context where 'cpage' is not yet set, the
default value should be 1, not 0.

Props MomDad, couturefreak.
Fixes #20319.
Built from https://develop.svn.wordpress.org/trunk@31617


git-svn-id: http://core.svn.wordpress.org/trunk@31598 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/link-template.php

@@ -2466,6 +2466,10 @@ function get_next_comments_link( $label = '', $max_page = 0 ) {
 
 	$page = get_query_var('cpage');
 
+	if ( ! $page ) {
+		$page = 1;
+	}
+
 	$nextpage = intval($page) + 1;
 
 	if ( empty($max_page) )

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.2-alpha-31616';
+$wp_version = '4.2-alpha-31617';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.