prevent memory leak in error case of GetDefaultUserPhrasePath
prevent memory leak in error case of GetDefaultUserPhrasePath

yan12125/libchewing,chewing/libchewing,Chocobo1/libchewing,cwlin/libchewing,yan12125/libchewing,Chocobo1/libchewing,chewing/libchewing,hiunnhue/libchewing,yan12125/libchewing,cwlin/libchewing,hiunnhue/libchewing,Chocobo1/libchewing,yan12125/libchewing,chewing/libchewing,Chocobo1/libchewing,cwlin/libchewing,cwlin/libchewing,hiunnhue/libchewing,chewing/libchewing,Chocobo1/libchewing,hiunnhue/libchewing,hiunnhue/libchewing,cwlin/libchewing