Typo on delete supplier invoice: files not deleted

[aschio]

Bug

Supplier invoice files are not deleted during invoice delete

See into code:

• method delete() class fournisseur.facture.class.php

parameter 'invoive_supplier' must be replaced by 'invoice_supplier'

see line:
$dir = $conf->fournisseur->facture->dir_output.'/'.get_exdir($this->id, 2, 0, 0, $this, 'invoive_supplier').$ref;

replace with:
$dir = $conf->fournisseur->facture->dir_output.'/'.get_exdir($this->id, 2, 0, 0, $this, 'invoice_supplier').$ref;