Fix memory leak when malloc() fails
Fix memory leak when malloc() fails

chewing/libchewing,PeterDaveHello/libchewing,robert501128/libchewing,simonfork/libchewing,PeterDaveHello/libchewing,chewing/libchewing,kito-cheng/libchewing,ShengYenPeng/libchewing,yan12125/libchewing,yan12125/libchewing,kito-cheng/libchewing,chewing/libchewing,Chocobo1/libchewing,yan12125/libchewing,hiunnhue/libchewing,school510587/general_index_libchewing,dimotsai/libchewing,PingNote/libchewing,czchen/libchewing,school510587/general_index_libchewing,czchen/libchewing,robert501128/libchewing,ShengYenPeng/libchewing,ShengYenPeng/libchewing,simonfork/libchewing,school510587/libchewing-phoneless,yan12125/libchewing,kito-cheng/libchewing,hiunnhue/libchewing,cwlin/libchewing,dimotsai/libchewing,school510587/phlcw130202,school510587/libchewing-phoneless,PeterDaveHello/libchewing,Chocobo1/libchewing,simonfork/libchewing,mangokingTW/libchewing,Chocobo1/libchewing,cwlin/libchewing,czchen/libchewing,Chocobo1/libchewing,school510587/libchewing-phoneless,ShengYenPeng/libchewing,czchen/libchewing,chewing/libchewing,PingNote/libchewing,bbyykk/libtaigi,robert501128/libchewing,bbyykk/libtaigi,cwlin/libchewing,simonfork/libchewing,cwlin/libchewing,school510587/phlcw130202,hiunnhue/libchewing,mangokingTW/libchewing,school510587/general_index_libchewing,PingNote/libchewing,school510587/phlcw130202,hiunnhue/libchewing,cwlin/libchewing,Chocobo1/libchewing,school510587/general_index_libchewing,robert501128/libchewing,bbyykk/libtaigi,kito-cheng/libchewing,PeterDaveHello/libchewing,dimotsai/libchewing,school510587/libchewing-phoneless,mangokingTW/libchewing,school510587/libchewing-phoneless,mangokingTW/libchewing,dimotsai/libchewing,school510587/phlcw130202,bbyykk/libtaigi,hiunnhue/libchewing,bbyykk/libtaigi,PingNote/libchewing,school510587/phlcw130202