[C++] Fixed attempting to connect to multiple IP addresses #11958
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merlimat
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rdhabalia,
hangc0276,
codelipenghui and
BewareMyPower
hangc0276
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codelipenghui
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(cherry picked from commit e4a9f66)
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Motivation
Fix #11950
In #11557 there was a fix to advance the DNS resolver result iterator before attempting to reconnect to the subsequent IP results.
The problem was that the 1st increment was not removed, so we were left to always skip the 2nd DNS result.