ver-chk: fix admin-filter (closes #1363);

also drop cache if json invalid

copyparty/httpcli.py

@@ -5644,7 +5644,7 @@ class HttpCli(object):
             no304vis=self.args.no304 > 0,
             msg=(
                 BADVER
-                if self.conn.hsrv.bad_ver and self.can_admin
+                if self.conn.hsrv.bad_ver and avol
                 else BADXFFB
                 if hasattr(self, "bad_xff")
                 else ""

copyparty/svchub.py

@@ -1871,3 +1871,7 @@ class SvcHub(object):
             except Exception as e:
                 t = "failed to process vulnerability advisory; %s"
                 self.log("ver-chk", t % (min_ex()), 1)
+                try:
+                    os.unlink(fpath)
+                except:
+                    pass