fix(filefield): file upload mai fail

this occurs when the filename contains a single quote

Signed-off-by: Thierry Bugier <tbugier@teclib.com>

inc/fields/filefield.class.php

@@ -201,6 +201,7 @@ public function parseAnswerValues($input, $nonDestructive = false) {
             $index = count($input["_$key"]);
          } else {
             foreach ($input["_$key"] as $document) {
+               $document = Toolbox::stripslashes_deep($document);
                if (is_file(GLPI_TMP_DIR . '/' . $document)) {
                   $prefix = $input['_prefix_formcreator_field_' . $this->fields['id']][$index];
                   $answer_value[] = $this->saveDocument($document, $prefix);