$NetBSD$

Merge https://github.com/shellinabox/shellinabox/pull/446/commits
commit 7f47efe for CVE-2018-16789: fix for broken multipart/form-data
to mitigate DoS attack.

--- libhttp/url.c.orig	2019-04-07 08:39:04.352921385 +0200
+++ libhttp/url.c	2019-04-07 08:42:30.746080956 +0200
@@ -312,6 +312,9 @@
               }
             }
           }
+        } else {
+           warn("[http] broken multipart/form-data!");
+           break;
         }
       }
       if (lastPart) {