K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2017-02-15T19:46:00.737143Z
K 7
svn:log
V 333
Fix handling of negative sbspace() return values.

I found that at least with Chelsio NICs TOE sockets quite often report
negative sbspace() values.  Using unsigned variable to store it resulted
in attempts to aggregate too much data in one sosend() call, that caused
errors and following connection termination.

MFC after:	2 weeks

END