Did a little clean up. Nothing that affected functionality
diff --git a/system/database/drivers/mysql/mysql_driver.php b/system/database/drivers/mysql/mysql_driver.php
index de372e6..52df1e5 100644
--- a/system/database/drivers/mysql/mysql_driver.php
+++ b/system/database/drivers/mysql/mysql_driver.php
@@ -314,6 +314,9 @@
$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows'). " FROM " . $this->_protect_identifiers($this->dbprefix.$table));
+ if ($query->num_rows() == 0)
+ return '0';
+
$row = $query->row();
return (int)$row->numrows;
}