General: Trim the input data in `maybe_unserialize()`, for consistency with `is_serialized()`.

Props pbearne, mikeschroder.
Fixes #36416.
Built from https://develop.svn.wordpress.org/trunk@47454


git-svn-id: http://core.svn.wordpress.org/trunk@47241 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/functions.php

@@ -616,7 +616,7 @@ function maybe_serialize( $data ) {
  */
 function maybe_unserialize( $data ) {
 	if ( is_serialized( $data ) ) { // Don't attempt to unserialize data that wasn't serialized going in.
-		return @unserialize( $data );
+		return @unserialize( trim( $data ) );
 	}
 
 	return $data;

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.5-alpha-47453';
+$wp_version = '5.5-alpha-47454';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.