[fixed] saved views + rotate

[Hank]

Hi there,
W3D 2.2.1
OS: Linux

Steps:
1. add any object
2. save a view in saved view area
3. select faces + rotate around any axis + RMB (pick point for axis)
4. go to saved view window and click previous entry.

Error:

Dump written 2018-12-24_11-20
Version: 2.2.1
OS: Linux 4.15.0-20-generic x86_64
GPU: NVIDIA Corporation | GeForce GTX 650 Ti/PCIe/SSE2
Window: geom
Reason: function_clause

Short stack trace:
[{wings_draw,invalidate_dlists,1,[{file,"wings_draw.erl"},{line,61}]},
{wings_draw,refresh_dlists,1,[{file,"wings_draw.erl"},{line,56}]},
{wings_vec,get_event,2,[{file,"wings_vec.erl"},{line,141}]},
{wings_wm,handle_event,3,[{file,"wings_wm.erl"},{line,981}]},
{wings_wm,send_event,2,[{file,"wings_wm.erl"},{line,948}]},
{wings_wm,do_dispatch,2,[{file,"wings_wm.erl"},{line,849}]},
{wings_wm,dispatch_event,1,[{file,"wings_wm.erl"},{line,758}]},
{wings_wm,get_and_dispatch,0,[{file,"wings_wm.erl"},{line,657}]},
{wings,init_part2,2,[{file,"wings.erl"},{line,106}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]

Long stack trace:
[{wings_draw,invalidate_dlists,[keep],[{file,"wings_draw.erl"},{line,61}]},
{wings_draw,refresh_dlists,1,[{file,"wings_draw.erl"},{line,56}]},
{wings_vec,get_event,2,[{file,"wings_vec.erl"},{line,141}]},
{wings_wm,handle_event,3,[{file,"wings_wm.erl"},{line,981}]},
{wings_wm,send_event,2,[{file,"wings_wm.erl"},{line,948}]},
{wings_wm,do_dispatch,2,[{file,"wings_wm.erl"},{line,849}]},
{wings_wm,dispatch_event,1,[{file,"wings_wm.erl"},{line,758}]},
{wings_wm,get_and_dispatch,0,[{file,"wings_wm.erl"},{line,657}]},
{wings,init_part2,2,[{file,"wings.erl"},{line,106}]},
{proc_lib,init_p_do_apply,3,[{file,"proc_lib.erl"},{line,247}]}]

+ recording




BR, Hank