code clean up, use new DestroyUserPhraseData()
code clean up, use new DestroyUserPhraseData()

cwlin/libchewing,hiunnhue/libchewing,hiunnhue/libchewing,hiunnhue/libchewing,yan12125/libchewing,cwlin/libchewing,chewing/libchewing,cwlin/libchewing,chewing/libchewing,hiunnhue/libchewing,yan12125/libchewing,cwlin/libchewing,cwlin/libchewing,hiunnhue/libchewing,yan12125/libchewing,yan12125/libchewing,chewing/libchewing,chewing/libchewing