Allow --save to work with --soln, causing saved game files to be

written out with the Solve operation having already been performed.

[originally from svn r9375]

midend.c

@@ -1331,7 +1331,8 @@ char *midend_solve(midend *me)
 	me->anim_time = 0.0;
 	midend_finish_move(me);
     }
-    midend_redraw(me);
+    if (me->drawing)
+        midend_redraw(me);
     midend_set_timer(me);
     return NULL;
 }