fixes syntax errors

src/backend/caldav/caldav.php

@@ -100,8 +100,8 @@ class BackendCalDAV extends BackendDiff {
                         ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendIMAP->getIdentityFromLdap() - Found entry in LDAP. Generating From"));
                         // We get the first object. It's your responsability to make the query unique
 
-                        $identity = CALDAV_IDENTITY_LDAP_IDENTIFIER === "objectguid" ? $this->convertObjectGUID2Str($items[0][CALDAV_IDENTITY_LDAP_IDENTIFIER][0]) : $items[0][CALDAV_IDENTITY_LDAP_IDENTIFIER][0]
-                        $caldav_path = str_replace('%i', , $caldav_path);
+                        $identity = CALDAV_IDENTITY_LDAP_IDENTIFIER === "objectguid" ? $this->convertObjectGUID2Str($items[0][CALDAV_IDENTITY_LDAP_IDENTIFIER][0]) : $items[0][CALDAV_IDENTITY_LDAP_IDENTIFIER][0];
+                        $caldav_path = str_replace('%i', $identity, $caldav_path);
                     }
                     else {
                         ZLog::Write(LOGLEVEL_DEBUG, sprintf("BackendIMAP->getIdentityFromLdap() - No entry found in LDAP"));