ensure UndoCommand wraps properly at 0

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10806 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/dpsoftrast.c b/dpsoftrast.c
index 45b62bd67ea9bd20fd10d5414c95a6c9d0d5067b..b43fa29b09495fa56e9edb14721490b9bb1fd5ea 100644 (file)
--- a/dpsoftrast.c
+++ b/dpsoftrast.c
@@ -850,6 +850,8 @@ static void DPSOFTRAST_UndoCommand(int size)
        int freecommand = dpsoftrast.commandpool.freecommand;
        int usedcommands = dpsoftrast.commandpool.usedcommands;
        freecommand -= size;
+       if (freecommand < 0)
+               freecommand += DPSOFTRAST_DRAW_MAXCOMMANDPOOL;
        usedcommands -= size;
        dpsoftrast.commandpool.freecommand = freecommand;
        dpsoftrast.commandpool.usedcommands = usedcommands;