Error text is wrong is some cases

Description

When a string is used instead of an array in ldap objectClass the error text returns the first letter of the objectClass instead of the full objectClass.

Distribution Name and Version

Debian

FusionDirectory Version

1.2

PHP version used

7

Origin of php packages

Distribution packages

Steps to Reproduce

1. Run fusioninventory with the wrong schema
2. You get errors in the log like «Invalid syntax - objectClass: f»

Expected behavior:

«Invalid syntax - objectClass: fdInventoryVERSIONPROVIDER»

Actual behavior:

«Invalid syntax - objectClass: f»