This fixes a regression bug not to connect the destination node twice or more.
That regression was brought by v1.2.0, and it also makes many goroutines for
first reconnection (these will finish after first reconnection established).
Signed-off-by: Satoshi Tagomori <tagomoris@gmail.com>
Upstream-commit: 53ed17449e990f49e8eecdf71ec3704ce7118660
Component: engine