This fixes a weird flakiness in our macos CI job

Close #193

This bug was introduced during refactoring when the non-blocking tcp
connect was introduced.

(cherry picked from commit 588f3653)

Georgy Moshkin authored 11 months ago and Егор Ивков committed 11 months ago

We don't use async getaddrinfo in the TcpStream anymore. You shouldn't
be creating connections concurrently within a fiber with other yielding
operations anyway, it's always possible to rewrite this kind of code and
make it simpler doing so.

In principle it's not impossible to make this sort of thing work, but
for now it requires getting more flexible access to the libev which
underlies the fiber runtime, and for that we already have some work in
progress. Should it land in tarantool & tarantool-module, we'll have a
simpler way to do async getaddrinfo.

affected structs:
- decimal
- datetime
- uuid