- Dmitry Kurochkin moved several struct fields from the connectdata struct to

the SingleRequest one to make pipelining better. It is a bit tricky to keep
  them in the right place, to keep things related to the actual request or to
  the actual connection in the right place.

lib/http_chunks.c

@@ -181,7 +181,7 @@ CHUNKcode Curl_httpchunk_read(struct connectdata *conn,
       if(*datap == 0x0a) {
         /* we're now expecting data to come, unless size was zero! */
         if(0 == ch->datasize) {
-          if(conn->bits.trailerhdrpresent!=TRUE) {
+          if(k->trailerhdrpresent!=TRUE) {
             /* No Trailer: header found - revert to original Curl processing */
             ch->state = CHUNK_STOPCR;