Solve animation (currently only in Untangle) was failing to set

me->anim_pos to zero, meaning that if it happened immediately after
a completion flash then anim_pos would start off half way through
its run.

[originally from svn r6127]

midend.c

@@ -1125,6 +1125,7 @@ char *midend_solve(midend_data *me)
 	    me->ourgame->anim_length(me->states[me->statepos-2].state,
 				     me->states[me->statepos-1].state,
 				     +1, me->ui);
+        me->anim_pos = 0.0;
     } else {
 	me->anim_time = 0.0;
 	midend_finish_move(me);