Fix wrong return checking
Fix wrong return checking

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