Avoid throwing some exceptions in LibevTCPConnection.waitForData.
Avoid throwing some exceptions in LibevTCPConnection.waitForData.

This avoids costly constructing/throwing/catching of the exception objects, it has no functional effect.

AndreyMZ/vibe.d,etcimon/vibe.d,Geod24/vibe.d,DBankov/vibe.d,machindertechnologies/vibe.d,Mihail-K/vibe.d,rejectedsoftware/vibe.d,gedaiu/vibe.d,etcimon/vibe.d,chalucha/vibe.d,redstar/vibe.d,schuetzm/vibe.d