Misspelled class property in db class.  _like_escape_chr, not _like_escape_char

http://codeigniter.com/bug_tracker/bug/9518/
diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index bac179d..9f991e4 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -405,7 +405,7 @@
 		
 		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
 		{
-			$sql .= " AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_char);
+			$sql .= " AND table_name LIKE '".$this->escape_like_str($this->dbprefix)."%' ".sprintf($this->_like_escape_str, $this->_like_escape_chr);
 		}
 		
 		return $sql;