Initialize $dbClass

diff --git a/wcfsetup/install/files/lib/system/WCFSetup.class.php b/wcfsetup/install/files/lib/system/WCFSetup.class.php
index 2e3b0f1e8fdf1514227c149d7141eb4fcb03d1b8..951a704d2ade37ffb5a03fd78c512395ce558e98 100644 (file)
--- a/wcfsetup/install/files/lib/system/WCFSetup.class.php
+++ b/wcfsetup/install/files/lib/system/WCFSetup.class.php
@@ -538,6 +538,7 @@ class WCFSetup extends WCF {
                $dbPassword = '';
                $dbName = 'wcf';
                $dbNumber = 1;
+               $dbClass = '';
                // set $dbClass to first item in $availableDBClasses
                foreach ($availableDBClasses as $dbClass) {
                        $dbClass = $dbClass['class'];