pml/ob1: fix heterogeneous support when using the send_inline optimization

We will track #4568 from the 1.8 CMR.

Closes trac:4568

cmr=v1.8.2:reviewer=jsquyres

This commit was SVN r31535.

The following Trac tickets were found above:
  Ticket 4568 --> https://svn.open-mpi.org/trac/ompi/ticket/4568

ompi/mca/pml/ob1/pml_ob1_isend.c

@@ -90,12 +90,15 @@ static inline int mca_pml_ob1_send_inline (void *buf, size_t count,
         opal_convertor_get_packed_size (&convertor, &size);
     }
 
+    match.hdr_common.hdr_flags = 0;
     match.hdr_common.hdr_type = MCA_PML_OB1_HDR_TYPE_MATCH;
     match.hdr_ctx = comm->c_contextid;
     match.hdr_src = comm->c_my_rank;
     match.hdr_tag = tag;
     match.hdr_seq = seqn;
 
+    ob1_hdr_hton(&match, MCA_PML_OB1_HDR_TYPE_MATCH, dst_proc);
+
     /* try to send immediately */
     rc = mca_bml_base_sendi (bml_btl, &convertor, &match, OMPI_PML_OB1_MATCH_HDR_LEN,
                              size, MCA_BTL_NO_ORDER, MCA_BTL_DES_FLAGS_PRIORITY | MCA_BTL_DES_FLAGS_BTL_OWNERSHIP,