fix: initialize tiled_prompt_lengths_buf_ to zero in gptneox #716
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yandai
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I think tiled_prompt_lengths_buf_ should be initialized to zero.
tiled_prompt_lengths_buf_
When invokeMaskPaddingTokens uses uninitialized tiled_prompt_lengths_buf_, result should be uncorrect.
https://github.com/Nvidia/FasterTransformer/blob/main/src/fastertransformer/models/gptneox/GptNeoX.cc#L760