Fix typo in r32196

The wrong descriptor field was used when calculating the size received when
using the RDMA rendevous protcol.

This commit was SVN r32232.

The following SVN revision numbers were found above:
  r32196 --> open-mpi/ompi@a14e0f10d4

ompi/mca/pml/ob1/pml_ob1_recvreq.c

@@ -188,8 +188,8 @@ static void mca_pml_ob1_put_completion( mca_btl_base_module_t* btl,
 
     if( OPAL_LIKELY(status == OMPI_SUCCESS) ) {
         bytes_received = mca_pml_ob1_compute_segment_length (btl->btl_seg_size,
-                                                             (void *) des->des_remote,
-                                                             des->des_remote_count, 0);
+                                                             (void *) des->des_local,
+                                                             des->des_local_count, 0);
     }
     OPAL_THREAD_ADD_SIZE_T(&recvreq->req_pipeline_depth,-1);