Chunked-transfers should have an additional CRLF after the final 0 CRLF

sequence.

lib/http.c

@@ -1614,8 +1614,8 @@ CURLcode Curl_http(struct connectdata *conn)
             /* Append the POST data chunky-style */
             add_bufferf(req_buffer, "%x\r\n", postsize);
             add_buffer(req_buffer, data->set.postfields, postsize);
-            add_buffer(req_buffer, "\r\n0\r\n", 5); /* end of a chunked
-                                                       transfer stream */
+            add_buffer(req_buffer, "\r\n0\r\n\r\n", 7); /* end of a chunked
+                                                           transfer stream */
           }
         }
         else {

lib/transfer.c

@@ -152,16 +152,16 @@ static int fillbuffer(struct connectdata *conn,
 
     /* copy the prefix to the buffer */
     memcpy(conn->upload_fromhere, hexbuffer, hexlen);
-    if(nread>hexlen) {
-      /* append CRLF to the data */
-      memcpy(conn->upload_fromhere +
-             nread, "\r\n", 2);
-      nread+=2;
-    }
-    else {
+
+    /* always append CRLF to the data */
+    memcpy(conn->upload_fromhere + nread, "\r\n", 2);
+
+    if((nread - hexlen) == 0) {
       /* mark this as done once this chunk is transfered */
       conn->keep.upload_done = TRUE;
     }
+
+    nread+=2; /* for the added CRLF */
   }
   return nread;
 }

tests/data/test56

@@ -48,5 +48,6 @@ Content-Type: application/x-www-form-urlencoded
 c
 we post this
 0
+
 </protocol>
 </verify>