[svn-r7406] Fix in internal request allocation

src/mpid/ch3/channels/nemesis/nemesis/netmod/mx/mx_alloc.c

@@ -98,6 +98,7 @@ int MPID_nem_mx_internal_req_dequeue(MPID_nem_mx_internal_req_t **param_req)
 	   curr_req->next = next_req;
 	   curr_req = next_req;
        }       
+      curr_req->next = NULL;
    }
 
  fn_exit:

src/mpid/ch3/channels/nemesis/nemesis/netmod/newmad/newmad_alloc.c

@@ -98,6 +98,7 @@ int MPID_nem_newmad_internal_req_dequeue(MPID_nem_newmad_internal_req_t **param_
 	   curr_req->next = next_req;
 	   curr_req = next_req;
        }       
+      curr_req->next = NULL;
    }
 
  fn_exit: