Do not delete if DB information is not available (and db is)

Script/DeleteThread.py

@@ -245,7 +245,9 @@ class DeleteThread(threading.Thread):
                         if filehealth and not filehealth == 'TRUNCATED':
                             success &= (castorfilesize == dbfilesize)
                             success &= (dbchecksum.lower() == checksum.lower())
-                                   
+                        elif not filehealth:
+                            success = False
+                                                               
                 if success:
                     self.delete(deletefile)
                 else: