From a42401d0c9a31155939123c554fcf0f0f842d653 Mon Sep 17 00:00:00 2001
From: "Michael Adams (mdawaffe)" <mdawaffe@git.wordpress.org>
Date: Wed, 6 May 2015 21:45:58 +0000
Subject: [PATCH] Upgrade: Ensure unintelligible DB schemas don't result in
 content loss.

See #32165.


git-svn-id: https://develop.svn.wordpress.org/trunk@32417 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/includes/upgrade.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wp-admin/includes/upgrade.php b/src/wp-admin/includes/upgrade.php
index 598635067f..8515113f78 100644
--- a/src/wp-admin/includes/upgrade.php
+++ b/src/wp-admin/includes/upgrade.php
@@ -1461,7 +1461,7 @@ function upgrade_430() {
 			);
 		}
 
-		if ( 'byte' !== $content_length['type'] ) {
+		if ( 'byte' !== $content_length['type'] || 0 === $content_length['length'] ) {
 			// Sites with malformed DB schemas are on their own.
 			return;
 		}