From 062836b194da71be547cff34c5a8f975157f16f2 Mon Sep 17 00:00:00 2001
From: Matt Mullenweg <matt@git.wordpress.org>
Date: Mon, 28 Nov 2005 08:48:18 +0000
Subject: [PATCH] Don't create empty umeta values.

git-svn-id: https://develop.svn.wordpress.org/trunk@3218 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/functions.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 961ad2bb80..7ddf5d7c8d 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -2114,6 +2114,10 @@ function update_usermeta( $user_id, $meta_key, $meta_value ) {
 
 	if ( is_array($meta_value) || is_object($meta_value) )
 		$meta_value = serialize($meta_value);
+	$meta_value = trim( $meta_value );
+
+	if ( '' == $meta_value )
+		return false;
 
 	$cur = $wpdb->get_row("SELECT * FROM $wpdb->usermeta WHERE user_id = '$user_id' AND meta_key = '$meta_key'");
 	if ( !$cur ) {