[kernel] fix OSNSP initialization after updateInteractions
[kernel] fix OSNSP initialization after updateInteractions

Erroneously omitted from c7f17df.

bremond/siconos,fperignon/siconos,fperignon/siconos,radarsat1/siconos,radarsat1/siconos,fperignon/siconos,radarsat1/siconos,fperignon/siconos,bremond/siconos,siconos/siconos,bremond/siconos,bremond/siconos,siconos/siconos,radarsat1/siconos,bremond/siconos,siconos/siconos,radarsat1/siconos,fperignon/siconos,siconos/siconos