fix condition for retrieving files for job attachments. (#3595)

Author: eduardojst10

roda-ui/roda-wui/src/main/java/org/roda/wui/api/v2/services/JobService.java

@@ -246,7 +246,7 @@ public JobUserDetails buildJobUserDetails(User user) {
   public StreamResponse retrieveJobAttachment(String jobId, String attachmentId) throws NotFoundException, GenericException {
     Path filePath = RodaCoreFactory.getJobAttachmentsDirectoryPath().resolve(jobId).resolve(attachmentId);
 
-    if (!RodaCoreFactory.getJobAttachmentsDirectoryPath().startsWith(filePath)) {
+    if (!filePath.startsWith(RodaCoreFactory.getJobAttachmentsDirectoryPath())) {
       throw new GenericException("Attempt to retrieve files outside the permitted scope");
     }