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liblzma: Clarify a comment.
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@ -338,9 +338,12 @@ lzma_decode(void *coder_ptr, lzma_dict *restrict dictptr,
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// Non-resumable Mode (fast) //
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///////////////////////////////
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// If there is not enough room for another LZMA symbol
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// go to Resumable mode.
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if (unlikely(!rc_is_fast_allowed() || dict.pos == dict.limit))
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// Go to Resumable mode (1) if there is not enough input to
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// safely decode any possible LZMA symbol or (2) if the
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// dictionary is full, which may need special checks that
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// are only done in the Resumable mode.
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if (unlikely(!rc_is_fast_allowed()
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|| dict.pos == dict.limit))
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goto slow;
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// Decode the first bit from the next LZMA symbol.
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