fix the issue of hotwords_embedding potentially being a null pointer

雾聪

2023-11-16 74cf8b65b2254eee059f6f599bb6095db5c66001

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g mail    gmail
gmail
n vidia    nvidia
nvidia
outlook
hotmail
yahoo
aol
gmx
msn
live
yandex
orange
wanadoo
web
comcast
google