K 10
svn:author
V 3
mjg
K 8
svn:date
V 27
2018-06-08T05:40:36.883398Z
K 7
svn:log
V 178
uma: fix up r334824

Turns out there is code which ends up passing M_ZERO to counters.
Since counters zero unconditionally on their own, just ignore drop the
flag in that place.

END