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e84704bd55
The ns_client_t struct is reset and zero-ed out on every query, but some fields (query, message, manager) are preserved. We observe two things: - The sendbuf field is going to be overwritten anyway, there's no need to zero it out. - The fields are copied out when the struct is zero-ed out, and then copied back in. For the query field (which is 896 bytes) this is very inefficient. This commit makes the reset more efficient avoiding to unnecessary zero-ing and copy.