Fix same issue from branch Master issue #291 for branch 3

src/main/java/org/jboss/netty/handler/codec/http/MixedFileUpload.java

@@ -57,7 +57,7 @@ public class MixedFileUpload implements FileUpload {
                         definedSize);
                 if (((MemoryFileUpload) fileUpload).getChannelBuffer() != null) {
                     diskFileUpload.addContent(((MemoryFileUpload) fileUpload)
-                        .getChannelBuffer(), last);
+                        .getChannelBuffer(), true);
                 }
                 fileUpload = diskFileUpload;
             }