MINOR: mux-h2/traces: add a missing trace on connection WU with negative inc

The test was performed but no trace emitted, which can complicate certain
diagnostics, so let's just add the trace for this rare case. It may safely
be backported though this is really not important.

(cherry picked from commit 87b74697cd58f7780f3585f70a1966553192830f)
Signed-off-by: Willy Tarreau <w@1wt.eu>
(cherry picked from commit 3342e1ea950b43cfeafccb4a516024443eb48252)
Signed-off-by: Willy Tarreau <w@1wt.eu>
1 file changed