Make sure unit vision radius is not negative
commitc878538e3a99cece246630fadb8ab00fbf18c4ba
authorcazfi <cazfi@a0f10bec-cc02-0410-94fc-a9cfff90b4cd>
Thu, 18 May 2017 13:13:14 +0000 (18 13:13 +0000)
committercazfi <cazfi@a0f10bec-cc02-0410-94fc-a9cfff90b4cd>
Thu, 18 May 2017 13:13:14 +0000 (18 13:13 +0000)
treeb5855045ea184fc7ff6a999b52dd2d57a0fe951a
parentdd18e86130616cf41a107189515246b55231789b
Make sure unit vision radius is not negative

Reported by David Fernandez (bard)

See hrm Bug #661313

git-svn-id: svn://svn.gna.org/svn/freeciv/branches/S2_6@35645 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
server/unittools.c