Fix off-by-one in retransmit counter overflow handling in TTcpConnection

The previous formula `new + (Max<ui32>() - old)` is off by one on wraparound:
when the counter goes from `old=5` to `new=2` after wrapping through zero the
true delta is `Max<ui32>() - 5 + 1 + 2`, but the formula gives
`Max<ui32>() - 3` instead of `Max<ui32>() - 2`.

Replaced with a plain unsigned subtraction via `static_cast<ui32>(new - old)`,
which handles overflow correctly by construction: C++ unsigned arithmetic wraps
modulo 2³², so the result is always the right delta regardless of whether the
counter wrapped.
commit_hash:f4aa45770c912ae53907b70cc1130c4822140e9f

0 files changed, 0 insertions, 0 deletions