Update FileUpload dependency to 2.0.0-M4

Fixes #529.

Author: weavejester

ring-core/project.clj

@@ -9,7 +9,7 @@
                  [org.ring-clojure/ring-websocket-protocols "1.14.1"]
                  [ring/ring-codec "1.3.0"]
                  [commons-io "2.18.0"]
-                 [org.apache.commons/commons-fileupload2-core "2.0.0-M2"]
+                 [org.apache.commons/commons-fileupload2-core "2.0.0-M4"]
                  [crypto-random "1.2.1"]
                  [crypto-equality "1.0.1"]]
   :aliases {"test-all" ["with-profile" "default:+1.10:+1.11:+1.12" "test"]}

ring-core/src/ring/middleware/multipart_params.clj

@@ -41,7 +41,8 @@
     (getContentType [_]       (get-in request [:headers "content-type"]))
     (getContentLength [_]     (or (req/content-length request) -1))
     (getCharacterEncoding [_] encoding)
-    (getInputStream [_]       (:body request))))
+    (getInputStream [_]       (:body request))
+    (isMultipartRelated [_]   false)))
 
 (defn- file-item-iterable [^AbstractFileUpload upload ^RequestContext context]
   (reify Iterable