Fix crash in get_member_id() if client group is not initialized #4
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Since in this case rd_kafka_memberid() return NULL, and std::string cannot be constructed from NULL [1]. [1]: https://github.com/llvm/llvm-project/blob/fe51d8ae5772626ef8237c33e0911695cf4f07db/libcxx/include/string#L1051-L1055
azat
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azat
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…om NULL It was likely an issue when the connection to broker had been failed. Refs: ClickHouse#80674 Refs: ClickHouse/cppkafka#4
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Since in this case rd_kafka_memberid() return NULL, and std::string cannot be constructed from NULL 1.
Refs: ClickHouse/ClickHouse#80674 (comment)
Upstream: mfontanini#320