Index: src/wp-includes/class-wp-editor.php
===================================================================
--- src/wp-includes/class-wp-editor.php	(revision 41343)
+++ src/wp-includes/class-wp-editor.php	(working copy)
@@ -1625,7 +1625,7 @@
 		$posts = $get_posts->query( $query );
 		// Check if any posts were found.
 		if ( ! $get_posts->post_count )
-			return false;
+			return apply_filters( 'wp_link_query', false, $query );
 
 		// Build results.
 		$results = array();