Do not check NULL for free()
Do not check NULL for free()

hiunnhue/libchewing,kito-cheng/libchewing,chewing/libchewing,chewing/libchewing,PeterDaveHello/libchewing,simonfork/libchewing,robert501128/libchewing,czchen/libchewing,kito-cheng/libchewing,ShengYenPeng/libchewing,chewing/libchewing,czchen/libchewing,PingNote/libchewing,bbyykk/libtaigi,PeterDaveHello/libchewing,chewing/libchewing,dimotsai/libchewing,simonfork/libchewing,bbyykk/libtaigi,dimotsai/libchewing,czchen/libchewing,ShengYenPeng/libchewing,robert501128/libchewing,yan12125/libchewing,hiunnhue/libchewing,dimotsai/libchewing,hiunnhue/libchewing,hiunnhue/libchewing,Chocobo1/libchewing,mangokingTW/libchewing,simonfork/libchewing,PeterDaveHello/libchewing,mangokingTW/libchewing,cwlin/libchewing,yan12125/libchewing,Chocobo1/libchewing,cwlin/libchewing,Chocobo1/libchewing,PingNote/libchewing,bbyykk/libtaigi,cwlin/libchewing,kito-cheng/libchewing,bbyykk/libtaigi,hiunnhue/libchewing,robert501128/libchewing,robert501128/libchewing,mangokingTW/libchewing,Chocobo1/libchewing,kito-cheng/libchewing,cwlin/libchewing,Chocobo1/libchewing,bbyykk/libtaigi,PeterDaveHello/libchewing,yan12125/libchewing,PingNote/libchewing,dimotsai/libchewing,yan12125/libchewing,cwlin/libchewing,PingNote/libchewing,mangokingTW/libchewing,simonfork/libchewing,czchen/libchewing,ShengYenPeng/libchewing,ShengYenPeng/libchewing